Practice MCQ Questions and Answer on Missing Number Finding

261.

Find the missing number?

• (A) 13
• (B) 11
• (C) 7
• (D) 9

Show Answer

 7 - 3 = 4. 9 - 3 = 6. So, 12 - 3 = 9.

262.

Find the missing number?

• (A) 15
• (B) 16
• (C) 18
• (D) 21

Show Answer

 Working in columns, starting with the top number, add 4 to give the next value down, and add 5 to give the one under that. So, In Third Column: 7 + 4 = 11 and 11 + 5 = 16. Missing element = 16.

263.

Find the missing number?

• (A) 4
• (B) 1
• (C) 0
• (D) 2

Show Answer

 Logic (Row-wise): Left Element + Right Element - 2 = Central Element. 7 + 3 - 2 = 8. 3 + 2 - 2 = 3. 6 + x - 2 = 5 x = 1.

264.

Find the missing number?

• (A) 16
• (B) 36
• (C) 24
• (D) 21

Show Answer

 Starting on the top left, and moving clockwise in a spiral towards the centre, numbers increase by 7, then decrease by 2. Repeat this pattern all the way around. So, Missing Number = 18 - 2 = 16.

265.

Find the missing number?

• (A) 11
• (B) 7
• (C) 13
• (D) 6

Show Answer

 Logic: Central Number = Difference of the sum of number in left Column and numbers in right column. So, Missing Element = (4 + 2 + 6) - (1 + 3 +2) = 6.

266.

Find the missing number?

• (A) 113
• (B) 123
• (C) 109
• (D) 156

Show Answer

 Start with 1 and move clockwise. Multiply the previous number by 2 and add 4 to give the next number around.

267.

Find the missing number?

• (A) 82
• (B) 86
• (C) 81
• (D) 89

Show Answer

 Logic (Left to Right): 44 = 12 * 12 = 144 (Remove First Digit) = 144 69 = 13 * 13 = 169 (Remove First Digit) = 69 96 = 14 * 14 = 196 = 96 25 = 15 * 15 = 225 = 25 56 = 16 * 16 = 256 = 56 Similarly, Missing Number = 17 * 17 = 289 ( Remove first digit) = 89.

268.

Find the missing number?

• (A) 12
• (B) 14
• (C) 9
• (D) 11

Show Answer

 Logic (Column-wise): First Element + 4 = Second Element Second Element + 6 = Third Element. 3 + 4 = 7 +6 = 13 5 +4 = 9 + 6 = 15 So, 1 + 4 = 5 + 6 = 11. Missing Number= 11.

269.

Find the missing number?

• (A) 1
• (B) 8
• (C) 4
• (D) 7

Show Answer

 Splitting the diagram into 3 smaller triangles, with 3 circles each, the sum of the numbers in each smaller triangle is always 21. So, 3 +7 + 11 = 21. 5 + 12 + 4 = 21. 10 + 10 + x = 21. x = 1. Missing Number = 1.

270.

Find the missing number?

• (A) 253
• (B) 250
• (C) 257
• (D) 197

Show Answer

 Starting at the top left, and moving through the diagram in a Z shape, double each number and add 3 to give the next number along. So, Required number = 2 * 125 + 3 = 253.