Elitmus Exam Numerical Ability Number System

Y is a Prime Number , X and Y are whole number. find the value of Y.
i) Y is divisible by (X+1) and (X+2)
ii) Y<200

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Elitmus Other Question

find remainder of (9+9^1+9^2+.........+9^n)/6
n is multiple of 11.
a) 2
b) 5
c) 3
d) 0
the square of two digit number(ab) divided by half of itself resultant added by 18 then divided by 2 then we get reverse of original number(ba). how many combination of ab exist
a) 9
b) 8
c) 7
d) 6