Find the value of `7 / 3.5`

Find the value of P(7,3)

The mean of 7,5,8,p and 11 is 8. Find the value of p.

Find the value of 5 1/7-{3 3/10+(2 4/5-7/10)}

Find the value of : 39-35+7-(-4)+21

Find the value of 1) . (-15)+4-:(5-3) 2) . (-40)xx(-1)+(-28)-:7

Find the value of 7 log(16/15) + 5 log (25/24) + 3 log (81/80) .

If 1!9 = 20, 9!5 = 28 and 5!5 = 20 , then find the value of 7!3 = ?

If (-5)/7=x/(28), find the value of x.

If (m-5, n + 3) = (7, 9), find the values of m and n.

If x=(5)/(3) and x=-(1)/(2) are the zeroes of the polynomial ax^(2)-7x+b , then find the values of a and b.