In the series : 7 8 9 7 6 5 3 4 2 8 9 7 2 4 5 9 2 9 7 6 4 7
Which figures have equal frequence ?
Option:
A. 253
B. 245
C. 375
D. 865
E. None of these
Answer: D . 865
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Justification:
In the given series, 2 occurs 3 times; 3 occurs once; 4 occurs 3 times; 5 occurs 2 times; 6 occurs 2 times; 7 occurs 5 times; 8 occurs 2 times and 9 occurs 4 times.
Clearly, the frequency of 5, 6 and 8 is the same i.e. 2.
