Question

Between what two consecutive integers does sqrt 123 lie?

A.
9 and 10

B.
12 and 13

C.
10 and 11

D.
11 and 12

Answer 1

lets look at A first
what is 9^2 and 10^2?

Answer 2

81 and 100

Answer 3

is 123 between 81 and 100?

Answer 4

No

Answer 5

ok next one

Answer 6

what is 12^2 and 13^2?

Answer 7

square root 123 is like...11

Answer 8

144 and 139

Answer 9

is 123 between 144 and 169?

Answer 10

No, Would it be C?

Answer 11

so you think 123 is between 100 and 121?

Answer 12

No

Answer 13

ok so last but not least is...
also you could have got the calculator approximation and seen it was a 11.something
11.something is between 11 and 12

Answer 14

Ok

Answer 15

So, it's D

Answer 16

:)

Answer 17

Thank you