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Start learning 50% faster. Sign in nowATQ,
Let the efficiency of a man = 'x' units/hour
Total work = 20 × x × 6 × 25 = 3000x units
Number of days taken by 30 men working 8 hours/day =
= 3000x ÷ (30 × x × 8)
= 3000x ÷ 240x = 12.5 days
What will be the value of expression if the signs ‘(-)’ and ‘(+)’ are interchanged?
75 + 42 – 6 × 56 ÷ 7 + 6 × 3 – 2
...If ‘$’ means ‘÷’, ‘#’ means ‘×’, ‘@’ means ‘-’ and ‘%’ means ‘+’, then the value of 65 @ 21 $ 3 # 5 % 7
...If + denotes ÷, × denotes -, - denotes ×, and ÷ denotes +, what is the value of the following expression:
124 + 4 × 5 – 6 ÷ 6 + 3 = ?
...Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
400 * 100 * 25 * 15 * 12 = 452
If we interchange 2 and 1, then what will be the resultant of the given equation?
21+ 18 ÷ 6 × 12 – 7 = ?
If ‘+’ means ‘÷’, ‘–’ means ‘+’, ‘×’ means ‘–’ and ‘÷’ means ‘×’, then what will be the value of the following e...
If '+' means '×', '×' means '-', '÷' means '+', and '-' means '÷', select the number from the given options that can replace the question mark '?' i...
If ‘$’ means ‘÷’, ‘#’ means ‘-’, ‘!’ means ‘×’ and ‘^’ means ‘+’, then the value of 84 ! 5 # 6 ^ 21 $ 7 is
...Which signs should be interchanged to make the given equation correct.
51 ÷ 3 + 17 x 14 - 2 = 6
Which of the following interchange of sign would make the given equation correct?
45 × 9 + 5 ÷ 4 = 25
