Question

Find the next term of the series :

$7,26,63,124,215,342,?$

• A. $481$
• B. $391$
• C. $511$
• D. $421$

Answer 1

Answer: (C)

$511$

The series is $(2\times 2\times 2)-1=7$

$(3\times 3\times 3)-1=26$

$(4\times 4\times 4)-1=63$

$(5\times 5\times 5)-1=124$

$(6\times 6\times 6)-1=215$

$(7\times 7\times 7)-1=342$

So,

$(8\times 8\times 8)-1=511$