Mr. and Mrs. have 7 sons. Each son has three sisters. How many children are in the family?

28 children.

Step-by-step explanation:

oml... thats like 30 years of childbirth. how in the world does these two handle it

10 maybe maybe i am wrong sir

they are =

Step-by-step explanation: on a number line from 0 to 3 (shown) -3 and +3 are all three "jumps" away from 0.

3                   2                     1                   0                -1                 -2                 -3

I hope I helped, good luck!