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From statement I: People becomes 9 from 7, and average decreases by 5. Let ‘n’ is previous average and then ‘n - 5’ is new average. So Sum of ages of 2 new people becomes 9 × (n – 5) – 7 × n which is given 25 So 9 × (n – 5) – 7 × n = 25 So 9n – 45 – 7n = 25 or 2n = 25+45= 70 So, n = 70/2 = 35 So average of new group = 35 – 5 = 30 From statement II: Total age of 7 people is 245 years, so their average = 245/7 = 35 So, average of new group = 35 – 5 = 30 So answer can be determined by either of statement I or II.
(5⁴) 5 × (25³)³ = ?
What will come in place of a?
(6)1.2 × (216 )2.7 × (36)2.7 = 6a
If (5000) 5 = 3.125
If √35 = 5.9 find the value of
(1.69) -1.5 = ?
If √7 × √35 = x√5, then find the value of x
Find the value of 56× 59÷ 514= ?
What is least number which when successively divided by 6, 4 and 4 leaves a remainder 5, 3 and 3 respectively?
(3125) -3/5 = ?
3√4913+ 3√4.913 + 3√0.004913 = ?