Question

3+12=45
4+9=52
2+14=80
5+?=90

Answer 1

Answer:

10

Step-by-step explanation:

let the number be "a".

3+12= 15

here, 15×3=45

4+9=13

here, 13×4=52

2+14=16

here, 16×5=80

therefore,

(5+a)×6=90

=5+a=90/6

=5+a=15

therefore a=10.