Which of the following is a principle of sustainable

What will be the value of the given expression after the following interchanges?

Expression: 84 ÷ 11 - 15 X 14 + 75

Which two digits and signs can be interchanged so as to balance the given equation?

406- 102 + 128 X 5 ÷ 58 = 545

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

4 7 6

15 ? 21

44 68 60

Which two signs should be interchanged to make the below equation mathematically correct?

9 ÷ 3 + 6 – 6 × 2 = 30

If ‘%’ means (÷), ‘&’ means (+), ‘$’ means (×), and ‘@’ means (-), then what is the value of the expression:

Which two signs should be interchanged to make the given equation correct?

15 ÷ 6 - 10 x 5 + 11 = 99

Select the correct combination of mathematical signs that can sequentially replace the sign * and make the equation correct.

5 * 14 * 6 * 8 * 9 * 502

Given below an equation having four blanks you have to check from the alternatives which among the given is correct?

21 _ 51 _ 7 _ 12 _ 75

How many meaningful four-letter words can be formed using the 1st, 3rd, 7th, and 8th letters of the word 'PERIPHERAL'?