The correct pattern follows the formula:
n³ ± 1 alternating between
+1 and
-1.
· 2³ - 1 =
7
· 3³ + 1 =
28
· 4³ - 1 =
63
· 5³ - 1 =
124
· 6³ - 1 =
215
· 7³ - 1 =
342
· 8³ - 1 =
511
Upon checking,
28 should follow the pattern
3³ - 1 = 26, not
28. Hence, the wrong term is
28.
English
10 Questions
20 Marks
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
Choose the correct answer from the options given below:
Arrange the following fractions in increasing order:
A.
B.
C.
D.
Choose the most appropriate answer from the options given below:
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