Question

6,7,15,8 which number cannot be used to write related number sentences

Answer 1

6 because 6 does not relate with any of these numbers.

But, 7 + 8 = 15, 15 - 7 = 8, and 15- 8= 7

Answer 2

6 cannot be used to write related number sentences.

Explanation:

The number 6 cannot be used to write related number sentences as it would not fit into the equation and make it true.

`7+8 =15`

`8+7 =15`

`15-8 =7`

`15-7 =8`

Since, nowhere in any of these equations can the 6 go in,

so that it make these number sentences true.