6, 9, 18, 45, 126, ….?

A) 369

B) 359

C) 329

D) 317

Multiply given number by 3,  After multiply subtract 9 from same number:

6*3=18-9=9

 9*3=27-9=18

18*3=54-9=45

45*3=135-9=126

126*3=378-9=369

 

 

 

Complete the series:

6, 9, 13, 16, 20, 23, ……..

A) 26, 30

B) 26, 31

C) 27, 30

D) 27, 31

First add 3 the 4 in whole series:

 6+3=9     ,      9+4=13

13+3=16 ,     16+4=20

20+3=23  ,     23+4=27

27+3=30

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Insert the missing number 6 8 10 11 14 15 ……

A) 12

B) 16

C) 14

D) 18

There are two series 

  First                                  Second  

6+4=10                            8+3=11

10+4=14                        11+4=15

14+4=18                        15+5=20

 

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