Question

1) Find the hidden numbers that fulfill the following conditions:
(a) If you add 4 to the number and double the result, you get 20.
(b) If you double the number, double that result and then double again, you get 16.
(c) If you subtract 4 from the number and halve the result, you get 6.
(d) If you multiply the number by 5, subtract 3 and halve the result, you get 6.
(e) If you subtract 5, square the result and then add 8, you get 17.
(f) If you multiply the number by 4, subtract 10 and divide the result by 5, you get 2.​

Answer 1

Answer:

4+6=10 and double it so we get 20

Ans 1

Answer 2

Answer:

a- 6

b-2

c- 16

d-3

e- I am sorry I am not able to guess

f- 20