Practice MCQ Questions and Answer on Missing Number Finding

31.

Find the missing number?

• (A) 1
• (B) 5
• (C) 8
• (D) 2

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 The diagram represents a multiplication sum : 128 x 2 = 256.

32.

Find the missing number?

• (A) 9
• (B) 6
• (C) 3
• (D) 13

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 Start with the numbers along the top right diagonal of the diagram, and add pairs of adjacent numbers together, putting the result in the square to the lower left of the original pair of numbers. Continue in this way towards the lower left hand corner. I.e 4 + 2 = 6 2 + 1 = 3 6 + 3 = 9 So, 1 + x = 7 x = 6

33.

Find the missing number?

• (A) 5
• (B) 2
• (C) 8
• (D) 1

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 Step 1 Take values in the top left and centre circles and put their sum in correspond- ing segments of the lower left circle. Step 2 Take values in the middle and right hand circles, and put their difference into corresponding segments of the lower right circle. Missing Number = Lower Right Segment of Middle Circle - Lower Right Segment of the Right Segment. Missing Number = 7 - 2 = 5.

34.

Find the missing number?

• (A) 12
• (B) 5
• (C) 8
• (D) 1

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 Sum of the element of the circle following the sequence 10, 12, 14, 16 and 18. 3 + 1 + 4 +2 = 10 2 + 2 + 8 + 0 = 12 7 + 1 + 5 + 1 = 14 6 + 4 + 3 + 5 = 18 So, 2 + 3 + x + 10 = 16 x = 1 Missing Number = 1

35.

Find the missing number?

• (A) 18
• (B) 15
• (C) 13
• (D) 11

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 Starting with the top circles, multiply each value by 2 and subtract 3, writing the result in the corresponding segment of the lower circle. So, 8 *2 = 16 - 3 = 13. Missing Number = 13.

36.

Find the missing number.

• (A) 22
• (B) 18
• (C) 16
• (D) 26

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 20 = 8 x 2 + 4 15 = 3 x 2 + 9 Hence, The number on the blank space, 6 x 2 + 6 = 18.

37.

Find the missing character.

• (A) 20
• (B) 25
• (C) 50
• (D) 75

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 Logic: 22 +42 = 20 32 +92 = 90 12 +72 = 50  

38.

Find the missing number?

• (A) 16
• (B) 14
• (C) 17
• (D) 23

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 Starting bottom left and moving clockwise around the triangle, numbers follow the sequence of Square Numbers 1 to 9. Missing number = Square of 4 = 4 * 4 = 16.

39.

Find the missing number?

• (A) 35
• (B) 39
• (C) 30
• (D) 43

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 Left to Right: 3 3 *2 - 1 = 5 5 *2 - 2 = 8 8 *2 - 3 = 13 13 * 2 - 4 = 22 Missing number, 22 * 2 - 5 = 39.

40.

Find the missing number?

• (A) 9
• (B) 3
• (C) 6
• (D) 1

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 Logic: (Sum of outer four element )/2 = Central Element. So, Required Number, = ( 1 + 8 + 6 + 3)/2 = 9.