Class 5 Logical Reasoning

Transcription

1 ID : in-5-logical-reasoning [] Class 5 Logical Reasoning For more such worksheets visit Answer t he quest ions () Round each number to nearest tens and f ind the product (2) Joel did yoga 3 days ago. He does yoga only on Thursday. What is the day today? (3) A dog is chasing a mouse. 5m 6m 7m 8m 9m 0m m The dog starts at 5 m and jumps 2 m every time. The mouse starts at 8 m and jumps m every time. If they both start at the same time, af ter how many jumps would the dog would reach the mouse? (4) How many triangles are there in this f igure? Choose correct answer(s) f rom given choice (5) If 6 = - = 50, then what is the value of +? a. 20 b. 270 c. 50 d. 240 (6) Vandita, Usha, Sulekha and Aditya are playing cards. Vandita and Usha are partners. if Usha is f acing east, and Sulekha is sitting on lef t hand side of Usha. Aditya is f acing which direction? a. north b. east c. south d. west (C) 206 Edugain (

2 (7) Which of the f ollowing 2 statements is true Statement : All rectangles are squares. Statement 2 : All squares are rectangles. a. None of these b. Only statement ID : in-5-logical-reasoning [2] c. Statements and 2 d. Only statement 2 (8) What is the next term in this series? 4, 7,, 6, 22, 29,... a. 38 b. 37 c. 39 d. 35 (9) The table below shows the number of pencils needed f or dif f erent number of students. If each student should get same number of pencils, how many pencils are needed f or 0 students? Number of Stundents Number of pencils a. 30 b. 29 c. 32 d. 33 (0) If D > B, B > C and C > A, then which of the f ollowing is def initely wrong. a. A > D b. D > A c. B > A d. D > C () There are red and white balls in a bag. Two-f if th of the balls are red. If 3 red and 7 white more balls are added to the bag, which of f ollowing is correct? a. There are more red balls than white balls b. There are more white balls than red balls c. Cannot be determined f rom given inf ormation d. There are same number of red and white balls (C) 206 Edugain (

3 ID : in-5-logical-reasoning [3] Fill in the blanks (2) If = 6, = 20 and = 6, = = (3) When a number is put into the machine below, a dif f erent number comes out. If 8 goes in, 3 comes out. If 0 goes in, 5 comes out. If 2 goes in, 7 comes out. 4 Number Machine? If 4 goes in, should come out? (4) Find the next number in the sequence. 3, 4, 5, 6,, 2, 3, 4, 9, 20, 2, 22, 27, 28, 29, 30, (5) The empty boxes below should have numbers and Edugain ( All Rights Reserved Many more such worksheets can be generated at (C) 206 Edugain (

4 Answers ID : in-5-logical-reasoning [4] () (2) Wednesday (3) 3 jumps Af ter st jump, dog will be at 7 and mouse will be at 9 Af ter 2 nd jump, dog will be at 9 and mouse will be at 0 Af ter 3 rd jump, dog will be at and mouse will be at Theref ore, dog will catch mouse in 3 jumps. (4) 0 Following triangles are there in this f igure Theref ore there are 0 triangles in this f igure (C) 206 Edugain (

5 (5) a. 20 ID : in-5-logical-reasoning [5] We have been told that 6 =. This means, one heart is same in value as 6 spades. We have also been told that - = 50. This means that: Value of one heart - Value of one spade = 50 In the f irst step, we learnt that the value of one heart is same as 6 spades. Combining these two f acts, we can say that: Value of 6 spades - Value of spade = 50 This means, the value of 5 spade = 50. If the value of 5 spades is 50, then the value of one spade will be 5 times less, that is, 50/5 = 30 Going back to what we learnt in step, the value of one heart = 30 6 = 80 Step 5 This means, the value of heart + spade is = = 20 Step 6 Now the value of + is 20. (C) 206 Edugain (

6 (6) a. north ID : in-5-logical-reasoning [6] The f ollowing picture shows the relation between the f our directions: It is given that Usha is f acing east. Theref ore, she should be sitting as f ollows, It is also given that Sulekha is sitting on the lef t hand side of Usha. Theref ore, she should be sitting as f ollows, Since Vandita is Usha's partner, she should be sitting opposite to Usha. Similarly Aditya is Sulekha's partner, and he should be sitting opposite to Sulekha. Step 5 Now, we can see that Aditya is f acing the north direction. (C) 206 Edugain (

7 (7) d. Only statement 2 ID : in-5-logical-reasoning [7] Any quadrilateral with f our right angle corner is rectangle. A square is a special kind of rectangle, it is one where all the sides have the same length Theref ore we can say that All squares are rectangles and All rectangles are not square Theref ore only statement 2 is correct (8) b. 37 If we look at the numbers in the series,,,,,,.., we will f ind that the numerator of all terms in the series is and the dif f erence between the denominators in successive terms is increasing by : 7-4 = 3-7 = = = = 7 The dif f erence between 29 and the denominator of the next term should be 8. Thus the next denominator should be = 37. Theref ore, the next term of the series is 37. (C) 206 Edugain (

8 (9) a. 30 ID : in-5-logical-reasoning [8] Let us look at the table caref ully and f ind some pattern between the number of students and number of pencils needed. We can see that the number of pencils needed is always equal to the number of students multiplied by 3. This means, the number of pencils needed f or 0 students is 0 3 = 30 pencils. (0) a. A > D It is given that D is greater than B, and B is greater than C. Theref ore, we can inf er that D too is greater than C. Now we know that D is greater than C, and it is given that C is greater than A. Theref ore, we can inf er that D too is greater than A. Since D > A, the statement A > D is def initely wrong. () c. Cannot be determined f rom given inf ormation It is given that Two-f if th balls are red and rest are white. Since Two-f if th is smaller than half, there are more white balls than red balls. Now more red balls are added than white balls There were more white balls than red balls, but now more red balls are added, theref ore we can not determine f or sure if there will be more red balls or white balls. (2) 49 (C) 206 Edugain (

9 (3) 9 ID : in-5-logical-reasoning [9] Lets write all pairs of input and output numbers, If we observe these numbers, we can see that output number is 5 less than the input number Same pattern should be f ollowed when number 4 goes in, theref ore output number, = 4-5 = 9 (4) (5) Lets observe the boxes where numbers 463 and 47 are written 463 is at 2 nd position 47 is at 0 th position Dif f erence in their position = 0-2 = 8, Dif f erence in numbers = = 8 From above dif f erences we can inf er that each part on this line represent Theref ore number at f irst position should be, = (2 - ) = 462 Step 5 Theref ore number in f irst box = 462 Step 6 Second missing box is at 7 th position Number at 7 th position = (7 - ) = 468 (C) 206 Edugain (