Logic Question:
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Which number should come next in the series

1, 3, 6, 10, 15,

A. 8
B. 11
C. 24
D. 21
E. 27

Answer:

Correct answer: 21

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Select the number that best completes the analogy

10 : 6 :: 3 : ?

A. 2
B. 1
C. -1
D. 12
E. 4
165135 is to peace as 1215225 is to

A. lead
B. love
C. loop
D. castle