Question

6,215,7,342,8,?...what will be the next number​

Answer 1

Answer:

511 will be the next number

Answer 2

Answer:

511

Step-by-step explanation:

$6 \times 6 \times 6 = 216 - 1 = 215.7 \times 7 \times 7 = 343 - 1 = =342.8 \times 8 \times 8 = 512 - 1 = 511.$