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3,22,7,45,15?,31
Read Solution (Total 3)
-
- 3*2 +1 =7
22*2 +1=45
7*2 + =15
45*2 +1 =91
15*2 +1=31
- 13 years agoHelpfull: Yes(0) No(0)
- ans is 91
3+4=7,22+23=45,7+8=15,45+46=91,15+16=31 - 13 years agoHelpfull: Yes(0) No(0)
- series starting from 1st element
difference
7-3= 4
15-7= 8
31-15= 16 Each difference is multiplied by 2
series starting from 2nd element
difference
45-22
=23
So multiply 23 by 2(ans is 46)
Now add 45+46 =91
- 12 years agoHelpfull: Yes(0) No(0)
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