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Question

Choose the most appropriate option to replace (?).
14, 19, 29, 49, 89, ?

A
139
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B
149
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C
159
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D
169
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E
None of the above
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Solution

The correct option is D 169
19 - 14 = 5
29 - 19 = 10
49 - 29 = 20
89 - 49 = 40
Likewise,
? - 89 = 80
? = 80 + 89
? = 169

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