If m and n are the two positive integers then m² and n² are ____________

(a)

Co-prime

(b)

Not co-prime

(c)

Even

(d)

odd

In the arithmetic series Sn = k + 2k + 3k +...+ 100, k is positive integer and k is a factor 100 then S_n is ____________

(a)

\(1000\frac { 10 }{ k } \)

(b)

\(5000\frac { 50 }{ k } \)

(c)

\(\frac { 1000 }{ k } +10\)

(d)

\(\frac { 5000 }{ k } +50\)

If p^th, q^th and r^th terms of an A.P. are a, b, c respectively, then (a(q - r) + b(r - p) + c(p - q) is____________

(a)

0

(b)

a + b + c

(c)

p + q + r

(d)

pqr

The sum of first n terms of the series a, 3a, 5a...is ____________

(a)

na

(b)

(2n - 1)a

(c)

n² - a

(d)

n²a²

In an A.P if the p^th term is q and the q^th term is p, then its n^th term is ____________

(a)

p+q-n

(b)

p+q+n

(c)

p-q+n

(d)

p-q-n