Secondary School (English Medium) (5 to 8) कक्षा ८ - CBSE Question Bank Solutions

Find the multiplicative inverse of `-1 xx (-2)/5`

Find the multiplicative inverse -1

Multiply `6/13` by the reciprocal of `-7/16`

Is `8/9` the multiplicative inverse of -1 `1/8`? Why or why not?

Is 0.3 the multiplicative inverse of 3 `1/3` ? Why or why not?

Write: The rational number that does not have a reciprocal

Write : The rational numbers that are equal to their reciprocals.

The numbers ______ and ______ are their own reciprocal.

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The reciprocal of − 5 is ______.

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Reciprocal of `1/x` where `x != 0` is _______

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The reciprocal of a positive rational number is ________.

Two numbers are in the ratio 5:3. If they differ by 18, what are the numbers?

Three consecutive integers add up to 51. What are these integers?

The sum of three consecutive multiples of 8 is 888. Find the multiples.

Three consecutive integers are such that when they are taken in increasing order and multiplied by 2, 3 and 4 respectively, they add up to 74. Find these numbers.

The ages of Rahul and Haroon are in the ratio 5:7. Four years later the sum of their ages will be 56 years. What are their present ages?

The number of boys and girls in a class are in the ratio 7:5. The number of boys is 8 more than the number of girls. What is the total class strength?

Baichung’s father is 26 years younger than Baichung’s grandfather and 29 years older than Baichung. The sum of the ages of all the three is 135 years. What is the age of each one of them?

Fifteen years from now Ravi’s age will be four times his present age. What is Ravi’s present age?

A rational number is such that when you multiply it by `5/2`and add `2/3` to the product, you get `-7/12`. What is the number?