Question

Answer all the one mark questions​

Answer 1

1. C

2. C

3. D

4. B

Hope it helps you

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Answer 2

1. P (intersection) Q : (C)

[means, the past which contributes to BOTH P & Q, at the same time.]

For this"x" which belongs to P & Q.

So, {x: x € P and x € Q}.

2. (C)
Common ratio of GP, can be calculated by dividing two continuous terms, i.e.,

${a}^{n} \div {a}^{m - n} \\ or \\ {a}^{m + n} \div {a}^{n} \\ both \: will \: give \: you \: the \: same \: answer.$
So, a^n is the correct answer.

3. (D)
a = 6
d = 1 - 6 (or = -4 - 1) = -5
"n"th term:
Tn = a + (n-1)d
So, 12th Term:
T12 = a + (12-1)d
= 6 + 11(-5) = -49

4. (B)
Just Divide Quadratic equations.