Write the expression that shows 3 times the sixth power of ten

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

On a cm grid, point p has coordinates (3,-1) and point q has coordinates (-5,6) calculate the shortest distance between p and q give your answer to 1 decimal place