Answer:
Least number which can be divided by 35, 56 and 91 is LCM of 35, 56 and 91.
Prime factorization of 35, 56 and 91:
35 = 5 × 7
56 = 23 × 7
91 = 7 × 13
LCM = 23 × 5 × 7 × 13
LCM = 3640
Least number which can be divided by 35, 56 and 91 is 3640.
Least number which when divided by 35, 56 and 91 leaves the same remainder,
7 is 3640 + 7 => 3647.
The number is 3647.