The pattern increases by 4, then 6, then 8 Since the rate is changing, the function has a square in it. If you plug 1, 2, and 3 into the functions below, is the one that works.
13) Here, Sequence : -2, -6, -18, -54 Common Ratio = a₂/a₁ = -6/-2 = 3 As the expression is in negative sign, it's sequence will be -3ˣ Where x = number of terms in the sequence [ By this rule, you can calculate the unknown nth number]
<span>In short, Option C is your answer!!!!
14) Here, a</span>₂-a₁ = 6-2=4, a₃-a₂ = 12-6 = 6 So, difference is increasing by 2 at each step, as it's not arithmetic, It must deviate by the square on it. As only one option has square on it, it will be (n²+n)
In short, Option B is your final answer.
15)V = 2πr²h h = V / 2πr²
In short, Option D is your final answer.
Hope it helped, Please Let me know, if you have some doubts!!
