15.

Number Series Quiz

Time: 10:00

Score: 0/10

Question 1 of 10

What will come in place of question mark (?) in the following series?
1024, 520, 268, 142, ?, 47.5

A. 84

B. 82

C. 79

D. 88

E. None of these

Answer & Explanation

Correct Answer: C. 79

Pattern: Each number is divided by 2 and then 12 is added.

1024 ÷ 2 + 12 = 524 (but 520 is given, so pattern is: ÷2 + 8)

1024 ÷ 2 + 8 = 520

520 ÷ 2 + 8 = 268

268 ÷ 2 + 8 = 142

142 ÷ 2 + 8 = 79

79 ÷ 2 + 8 = 47.5