Question

Please help me ! I need 1-6 please help me I need them ASAP please help

Answer 1

1. between 7 and 8
reasoning:
7^2=49
8^2=64
therefore it must be between the two

2. add all digits together and if they add up to a number divisible by 3 the number is divisible by 3
example: 42 4+2=6 6 is divisible by 3

3. 6√3