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Number Puzzles Questions and Answers

Puzzles
43. Which of the following is the missing section?
Ans: A.
Sol.
Looking across and down each number is the sum of the previous two numbers.
 
44. Simplify
Ans: + 4.
Sol.
= – 10 + (16 ÷ 2) + 6
= – 10 + 8 + 6
= + 4.
 
45. Which two numbers should replace the question marks?
4, 45, 11.3, 41.3, ?, ?, 25.9, 33.9
Ans: 18.6, 37.6
Sol.
There are two interwoven sequences: starting at 45 alternate numbers are – 3.7. Staring at 4 alternate numbers are +7.3.