Mathematical… | NUST Entrance Test Mathematics

MM

Mashaal Masha

Sep 29, 2022

Choose the correct options for the following questions.

For $n\geq -2$, 1+3+5+.....+(2n+5)=

Difficulty: Easy

A:

(n+2)^{2}

B:

(n-2)^{2}

C:

2n+1

D:

(n+3)^{2}

For $n\:\epsilon\:N, 2^{n}>n$ is to only when

Difficulty: Easy

A:

n>2

B:

n<2

C:

n\leq 4

D:

n\geq 4

If n is any positive number, then 1/2.4+1/4.6+1/6.8+......+1/2k(2k+2)=

Difficulty: Easy

A:

n/2n+1

B:

n/4(n+1)

C:

\frac{n^{2}(n+1){2}}{4}

D:

\frac{2n^{2}+4}{4}

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