Let the sum be P.
Then, 1352 = P(1 +4/100)²

Correct Option: B

Let the sum be P.
Then, 1352 = P(1 +4/100)²
⇒ 1352 = P x 26/25 x 26/25
⇒ P = (1352 x 25 x 25) / (26 x 26) = 1250
∴ Principal = Rs. 1250

Let time be t years
∵ 882 = 800( 1 +5/1000)^t
⇒ 882/800 = (21/20)^t

Correct Option: B

Let time be t years
∵ 882 = 800( 1 +5/1000)^t
⇒ 882/800 = (21/20)^t
⇒ (21/20)² = (21/20)^t
⇒ t =2
∴ Time = 2years

∵ Final Amount = Rs.[2800 x (1 + 10/100) x (1 +5/100)]
= Rs. [ 2800 x 11/10 x 21/20 ]
= Rs. 3234

Correct Option: C

∵ Final Amount = Rs.[2800 x (1 + 10/100) x (1 +5/100)]
= Rs. [ 2800 x 11/10 x 21/20 ]
= Rs. 3234

∴ Required C.I. = Rs.(3234 - 2800) = Rs .434

Amount = Rs. 7500(1 + 4/100)²
= Rs. 7500 x 26/25 x 26/25
= Rs .8112

Correct Option: D

Amount = Rs. 7500(1 + 4/100)²
= Rs. 7500 x 26/25 x 26/25
= Rs .8112

Let P be the principle and R% per annum be rate
Then, P(1 +R/100)³ = 3149.28 .....(i)
and P(1 + R/100)² = 2916 .....(ii)

Correct Option: C

Let P be the principle and R% per annum be rate
Then, P(1 +R/100)³ = 3149.28 .....(i)
and P(1 + R/100)² = 2916 .....(ii)
on dividing(i) and (ii) we get
∴ (1 + R/100) = 3149.28/2916
⇒ R/100 = 233.28/2916
⇒ R = 233.28/2916 x 100 = 8%
Now, P(1 + 8/100)² = 2916
⇒ P x 27/25 x 27/25 = 2916
∴ P = (2916 x 25 x 25)/(27 x 27)
= Rs. 2500