Question

3+3=12
5+5=40
7+7=84
9+9=144
2+2=?

Answer 1

SOLUTION

GIVEN

3 + 3 = 12

5 + 5 = 40

7 + 7 = 84

9 + 9 = 144

TO DETERMINE

2 + 2 = ?

EVALUATION

Here it is given that

3 + 3 = 12

5 + 5 = 40

7 + 7 = 84

9 + 9 = 144

First we find the pattern

3 + 3 = 12 ⇒ 6 × 2 = 12

5 + 5 = 40 ⇒ 10 × 4 = 40

7 + 7 = 84 ⇒ 14 × 6 = 84

9 + 9 = 144 ⇒ 18 × 8 = 144

Thus we see that for a number N

N + N = Sum of the numbers × Previous number to N

Thus we get

2 + 2

= 4 × 1

= 4

FINAL ANSWER

2 + 2 = 4

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