Question

(iv) Find the sum of all numbers from 150 to 200 which are divisible by 8.​

Answer 1

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➟Numbers divisible by 8 from 150 - 200 = 152, 160, 168, 184, 192, 200

so the sum of all these numbers can be calculated by the formula

$\frac{a + l}{2} \times n$

whereas, "a "is the first digit and " l" is the last digit and "n" is the number of digits .

$\frac{152 + 200}{2} \times 7$

$\frac{352}{2} \times 7$

$= 176 \times 7 \\ = 1232$

Answer

The sum of all the numbers from 150 to 200 is 1232