self Maths Puzzle


When the index of an exponential expression with a positive base is doubled, then the expression increases by 700%. If one of the values that the base cannot have is X which of the following is not a possible value of P?

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self Other Question
A number of three digits in base 7, when expressed in base 9, has its digits reversed in the order. What is the sum of the digits of the number?
If x3−6x2+px+q is exactly divisible by x2−3x+2, then:

A.

p+q > 0 and pq > 0

B.

p+q > 0 and pq < 0

C.

p+q < 0 and pq < 0

D.

p+q < 0 and pq > 0