The correct answer is 30
Number must start by 1 or 2 and for divisibility by
4 last two digits shall be divisible by 4
⇒ Total 30 numbers
If \[ f(x) = \int \frac{1}{x^{1/4} (1 + x^{1/4})} \, dx, \quad f(0) = -6 \], then f(1) is equal to:
Permutation is the method or the act of arranging members of a set into an order or a sequence.
Combination is the method of forming subsets by selecting data from a larger set in a way that the selection order does not matter.