Question

10+5=1002515..4+3=1697..11+8=1216419..2+1..?

Answer 1

2 + 1 = 413

• If we try to see the pattern in the given three operations we see that,
• 10+5 = 1002515
• 100 is square of the 10 (first number). 25 is square of 5 (second number) and 15 is addition of 10 and 5 i.e the two numbers.
• 4+3 = 1697
• 16 is square of first number. 9 is square of second number and 7 is addition of the two numbers.
• 11+8 = 1216419.
• 121 is square of first number. 64 is square of second number. 19 is addition of two numbers.
• We can generalize the logic as,
• a + b = a²b²(a+b)
• ∴ 2 + 1 = 2²1²(2+1)
• ∴ 2 + 1 = 413.