1.

If the common difference of the AP is 5 then a 15 - a 11 is equal is

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Answer:

Step-by-step explanation:

Hello ...

Best way to solve sum is ...

We know that Ap common difference is 5 ...we can use it ❣️❣️

The ap sequence looks LIKE a,a+d,a+2d,a+3d,..............,a+nd

A 11 is equal to a+10d

Same as ,A 15 is equal to a+14d ...

Then a15 - a11 is equal to

a+14d - ( a +10d)

a+14d - a- 10d

A GETS cancel ,,,,,14d - 10d

14× 5 - 10 ×5

70 - 50 = 20.

Hope it will helps you ❣️

HIT thanks BUTTON if you will understand



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