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Please explain this

hello i got good marks in maths and reasoning but my english is very poor so how to crack sectional cut off in english with this 15 days

Last two non zero digits in 25!

Tricks for simplification

If N is a positive odd number, find the value of m in 150! = 2^m
× N.
1. 146 2. 145 3. 75 4. None of these

If x is a positive integer, such that 2x+12 is divisible by x, how many possible values can x have?

The number of integral values of y satisfying 3x – 2y = 1 for integral values of x, where
0 < x < 102 is
1. 25
2. 51
3. 3
4. None of these

f(×)=ax^2 +bx+c where a not equal to 0.how many positive real roots does f(x)=0 have if maximum value of f(x) occurs at a root.?

A and B start simultaneously at one end of a swimming pool whose length is 50 m. The swimming race is a race of 1000 m. If A beats B and meets him 17 times during the course and A' speed is 5 m/s then the speed of B could be

a) 1 m/s b) 3 m/s  c) 4 m/s d) 6 m/s

@Srikanth Lingamneni

How many 5 digit no.'s can be formed by using the digits 0,1,2,4,8 only once so that they are divisible by 120?