How many 3 s are followed by 7 but are not preceded by 1 ?
A
2
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B
3
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C
4
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D
5
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Solution
The correct option is B 4 Mark all 3s in the given number chain, which are followed by 7 and not preceded by 1 5 3 7 7 3 4 2 6 3 7 2 7 1 3 7 7 3 7 3 4 3 2 3 7 6 1 3 7 There are four such 3s.