Math, asked by shilpajsw, 1 month ago

In which table 91 will come in 2 to 10 and in which table comes and show like Example:2*1=2​

Answers

Answered by seemamishra610
10

Answer:

It will come in 7

7 × 13 = 91

Step-by-step explanation:

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Answered by NamrataSachdeva
1

Answer:

7 * 13 = 91

91 occurs in 7 table.

Step-by-step explanation:

In order to find which number between 2 to 10 a particular number is divisible by, the following rules are to be followed:

  1. A number is divisible by 2 if the number is even, that is ending with 0, 2 ,4, 6 or 8. Ex: 24, Last digit = 4 is even. So 24 is divisible by 2.          (2 * 12 = 24)
  2. A number is divisible by 3 if the sum of digits of the number is divisible by 3. Ex: 24, Sum of digits = 2 + 4 = 6 is divisible by 3. So 24 is divisible by 3. (3 * 8 = 24)
  3. A number is divisible by 4 if the last 2 digits of the number are divisible by 4. Ex: 24, Last two digits = 24 is divisible by 4. So 24 is divisible by 4. (4 * 6 = 24)
  4. A number is divisible by 5 if the number ends with either 5 or 0.    Ex: 20 or 25
  5. A number is divisible by 6 if the number is divisible by both 2 and 3. Ex: 24 is divisible by both 2 and 3, so 24 is divisible by 6. (6 * 4 = 24)
  6. A number is divisible by 7 if the difference between twice the unit digit of the given number and the remaining part of the given number should be divisible by 7 or be equal to 0. Ex: 14, Difference = 4 * 2 - 1 = -7 is divisible by 7. So 14 is divisible by 7. (7 * 2 = 14)
  7. A number is divisible by 8 if the last three digits of the number is divisible by 8. Ex: 24, Last three digits = 024 is divisible by 8. So 24 is divisible by 8. (8 * 3 = 24)
  8. A number is divisible by 9 if the sum of digits of the number is divisible by 9. Ex: 27, Sum of digits = 2 + 7 = 9 is divisible by 9. So 27 is divisible by 9. (9 * 3 = 27)
  9. A number is divisible by 10 if the number ends with 0. Ex: 20

Calculation:

By following the above rules, let's find the number 91 is divisible by:

  1. 91 is not an even number. So 91 does not occur in 2 table.
  2. Sum of digits = 9 + 1 = 10, 10 is not divisible by 3 or 9. So 91 does not occur in 3 or 9 tables.
  3. Last digit,1 is not divisible by 4. So 91 does not occur in 4 table.
  4. 91 does not end in 0 or 5. So 91 does not occur in 5 or 10 tables.
  5. Since 91 is not divisible by 2 and 3, it is not divisible by 6. So 91 does not occur in 6 table.
  6. Last 3 digits of the number 091 is not divisible by 8. It gives a remainder of 3. So 91 does not occur in 8 table.
  7. Difference between twice the unit digit of 91 and the remaining part of 91 = 2 - 9 = -7 is divisible by 7. So 91 occurs in 7 table. By performing long division we obtain the quotient as 13.

Therefore, 7 * 13 = 91

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