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Number Puzzles Questions and Answers

Puzzles
22. Each number in the pyramid is the sum of the two numbers immediately below it. Fill in the pyramid with the missing numbers?
Ans: 103.
Sol.
 
23. Which number is the odd one out?
9678 4572 5261 5133 3527 6895 7768
Ans: 3527.
Sol.
In the others the sum of the first two numbers is equal to the sum of the second two numbers for example 5 + 2 = 6 + 1;
 
24. What number should replace the question mark?
10, 10,9, 7, 7, ?, 4, 4, 3, 1
Ans: 6.
Sol.
The sequence progresses – 0, –1, –2 repeated.