Question

1,5,15,34,65,_____ in series 65 after number

Answer 1

Next number will be 111

1 = 1
2+3 = 5
4+5+6 = 15
7+8+9+10 = 34
11+12+13+14+15 = 65
16+17+18+19+20+21= 111
22+23+24+25+26+27+28 = 175

Answer 2

The next number in series after 65 is 111.

Step-by-step explanation:

Given : Series 1,5,15,34,65,___

To find : The next number after 65 ?

Solution :

We have to determine the pattern in which the series follow up,

$1 = 1$

[tex]2+3 = 5 [/tex]

[tex]4+5+6 = 15 [/tex]

[tex]7+8+9+10 = 34 [/tex]

[tex]11+12+13+14+15 = 65 [/tex]

[tex]16+17+18+19+20+21= 111 [/tex]

and so on,...

Therefore, the next number in series is 1,5,15,34,65,111.

#Learn more

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