Question

Find the missing term:
3, 18, 36, 63, 117, 252, ?

Answer 1

Answer:

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Step-by-step explanation:

Add all the numbers and Divide by how many terms are given

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Answer 2

The missing term(?) is "630".

Step-by-step explanation:

The given series are

3, 18, 36, 63, 117, 252, ?

18 =  3 + 15 = 18,

36 = 18 + (15 + $3^{1}$) = 18 + (15 + 3) = 36,

63 = 36 + (18 + $3^{2}$) = 36 + (18 + 9) = 63,

117 = 63 + (27 + $3^{3}$) = 63 + (27 +27 ) = 117,

252 = 127 + (54 + $3^{4}$) = 127 + (54 + 81 ) = 252,

∴ Missing number (?) = 252 + (135 + $3^{5}$)

= 252 + (135 + 243) = 252 + 378

=  630

Hence, the missing term(?) is "630".