$10,$ __ $, 15, 15, 20, 20, 25, 25, . . .$ . What number should fill the blank?

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Solution

The correct option is C 10
Here addition with repetition series, each number in the series repeats itself, and then increases by $5$ to get the next number.
The next number is $10$ .

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Simplify the following:

(1) Subtract (−5) from 5.

(2) How much should be subtracted from (+5) to get −7?

(3) By how much (−10) exceeds (−20).

(4) From what number should (+10) be subtracted to get −15?

(5) What must be added to +7 to get −10?

(6) What should be added to +10 to get −4?

(7) If then, fill up the gap.

(8) If then fill up the gap.

(9) . Find the difference and show the operation by drawing a number line.

(10) Subtract −100 from the sum of −30 and +30.

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