Question

With-out actual division show that 770077 is divisible by 7​

Answer 1

Step-by-step explanation:

Formula

For testing the divisibility of a number by 7,we proceed according to the following steps :

Step 1 double the unit digit of the given number

Step 2.subtract the above number from the number formed by excluding the unit digit of the given number.

Step 3.If the number so obtained is divisible by 7 then the given number is divisible by 7.

The given number is 770077

Now,77007-(7×2)=77007-14=76993 which is divisible by 7

Therefore, 770077 is divisible by 7

Hope it helps you...