Given
Rate = 5%, Time = 4 years and Simple interest = 800
SI = P × R × T/100
Where, P = principal
R = rate,T = time
CI = P( 1 + r/100)n - P
Where, P = principal, n = time
Let the principal be P.
SI = (P × R × T)/100
800 = (P × 5 × 4)/100
P = 4000
CI = 4000( 1 + 5/100)4 - 4000
CI = 4000 × (105/100)4 - 4000
CI = (4000 × 21/20 × 21/20 × 21/20 × 21/20) - 4000
CI = 4862.025 - 4000
C.I = 862.025 ≈ Rs. 862
English
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12 Mins English English50 Questions100 Marks60 Mins English English10 Questions20 Marks12 Mins EnglishFor different sets of datasets X and Y. correlation coefficient between X and Y, that is R and standard deviation of X and Y, that is, S(X) and S(Y) are given in A-D below. Estimate the covariance between X and Y for each dataset and arrange in ascending order.
A. R= 0.5, S(X)= 8, S(Y)= 10
B. R= 4/7, S(X)= 7, S(Y)= 9
C. R= 0.7, S(X)= 12, S(Y)= 5
D. R= 19/42, S(X)= 14, S(Y)= 6
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A.
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C.
D.
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