Question

ਇੱਕ ਸੰਖਿਆ ਜਿਸਦਾ ਇਕਾਈ ਅੰਕ 8 ਹੋਵੇ, ਹਮੇਸ਼ਾ ਸੰਖਿਆ ___ ਦਾ ਇੱਕ ਗੁਣਜ ਹੁੰਦੀ ਹੈ। If 8 is at unit place of a number then number is always a multiple of ........... यदि 8 एक संख्या के इकाई स्थान पर है तो संख्या हमेशा ............ का गुणक होता है। *


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Answer 1

If 8 is at unit place of a number then number is always a multiple of ......... .

Solution:

The unit place of a number is 0, 2, 4, 6 or 8, then the number is always divisible by 2.

The last two digits of number is divisible by 4, then the number is divisible by 4.

The 8 is at unit place of a number, then the number is always divisible by 2.

Thus,  If 8 is at unit place of a number then number is always a multiple of 2,

Answer 2

Given : ਇੱਕ ਸੰਖਿਆ ਜਿਸਦਾ ਇਕਾਈ ਅੰਕ 8 ਹੋਵੇ, ਹਮੇਸ਼ਾ ਸੰਖਿਆ ___ ਦਾ ਇੱਕ ਗੁਣਜ ਹੁੰਦੀ ਹੈ।

If 8 is at unit place of a number then number is always a multiple of ...........

यदि 8 एक संख्या के इकाई स्थान पर है तो संख्या हमेशा ............ का गुणक होता है।

To Find : Fill in the blank

Solution:

ਇੱਕ ਸੰਖਿਆ ਜਿਸਦਾ ਇਕਾਈ ਅੰਕ 8 ਹੋਵੇ, ਹਮੇਸ਼ਾ ਸੰਖਿਆ _2_ ਦਾ ਇੱਕ ਗੁਣਜ ਹੁੰਦੀ ਹੈ।

If 8 is at unit place of a number then number is always a multiple of ....2.......

यदि 8 एक संख्या के इकाई स्थान पर है तो संख्या हमेशा ....2........ का गुणक होता है।

8 is at unit place means number is even . every even number is divisibly by 2

To Be divisible by 4  , last two digits should be divisible by 4

28 is divisible by 4  but 18 is  not divisible

Hence 8 at unit place does not ensure that it will be divisible by 4

To Be divisible by 4  , last two digits should be divisible by 4

28 is divisible by 4  but 18 is  not divisible

Hence 8 at unit place does not ensure that it will be divisible by 4

To Be divisible by 8  , last three digits should be divisible by 8

128 is divisible by 8  but 118 , 138 is  not divisible

Hence 8 at unit place does not ensure that it will be divisible by 8

Hence correct answer is 2.

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