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what should come in place of question mark (?) in the following questions?
[(3024 ÷ 189)1/2 + (684 ÷ 19)2] = (?)2 + 459
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4.4 × 5/16 of 30% of 216 = ?
? = 4.4 × 5/16 × 64.8 = 89.1
(0.0729 ÷ 0.1)3 ÷ (0.081 × 10)5 × (0.3 × 3)5 = (0.9)?+3
In each of the following questions, a number series is given. Identify the wrong number in the series.
5531, 5506, 5425 ,5304, 5135, 4910, 4621
The number should be 5555 in place of 5531. −72,−92,−112,−132,−152,−172...
6, 7 ,9, 13 ,26, 37 ,69
The number should be 21 in place of 26. +1, +2, +4, +8, +16, +32
1, 3 ,10 ,36 ,152 ,760 ,4632
The number should be 770 in place of 760. ×1 + 2, × 2 + 4, × 3 + 6, × 4 + 8, × 5 + 10, × 6 + 12,...
The fare of a bus is Rs. x for the first five kilometres and Rs.13 per kilometre thereafter. If a passenger pays Rs. 2402 for a journey of 187 kilometres, what is the value of X?
Let the fare of first five kilometres be x . Total distance = 187 km Remaining distance = 187 – 5 = 182 km Now, x + 182 ×× 13 = 2402 x = 2402 – 2366 =Rs. 36
The product of three consecutive even numbers is 4032. The product of the first and the third number is 252. What is five times the second number?
The sum of the ages of 4 members of a family 5 years ago was 94 years. Today, when the daughter has been married off and replaced by a daughter-in-law, the sum of their ages is 92. Assuming that there has been no other change in the family structure and all the people are alive, what is the difference between the age of the daughter and that of the daughter-in-law?
There are four members in a family. five years ago the sum of ages of the family members = 94 years Now, sum of present ages of family members = 94 + 5 × 4 = 114 years Daughter is replaced by daughter-in-law. Thus, sum of family member’s ages becomes 92 years. ∴∴ Difference = 114 – 92 = 22 years
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