6, 12, 21, ___, 48
options :
a) 33
b) 40
c) 45
d) 38
Answers
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3
a. 33 is right
if uh carefully observe the pattern,
uh will notice that the multiples of 3 is added to each no. i.e
6+6 = 12
6+6+9=21
6+6+9+12=33
6+6+9+12+15=48
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