Question

Divide       (30x+70)  ÷ 5 ​

Answer 1

Answer:

To find the highest power of 5 dividing

90×80×⋯×10

we first need to find the highest power of 5 which divides each part

For parts all the parts but 50 , the highest power of 5 is simply 5 , since they are not divisible by 25 . Only 50 has the highest power of 25 , or 52 .

We simply need to add all the exponents to get the highest exponent dividing the whole thing, which gives us

1+1+1+1+2+1+1+1+1=10

This means that 5^10=9765625 is the highest power of 5 dividing this expression.