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A+B B Time 17 : 42.5 Efficiency 42.5 : 17 25 : 10 Efficiency of A+B = 25 Efficiency of B = 10 Efficiency of A = 25 – 10 = 15 Ratio = x:y = 15:10 So, x – y = 15 – 10 = 5
If the number 9458k2 is divisible by 8, then find the number of possible values of 'k'.
If P represents the largest single-digit prime number, determine the fourth proportional to the numbers (P + 3), (P - 2), and (P + 5).
The first odd number is 1, second is 3, third is 5 and fourth is 7 and so on, then find the 188th odd number?
The mode and the mean of grouped data are 25 and 29.5 respectively. Find the median, correct to two places of decimal, using empirical relation.
The data given below shows the marks obtained by 12 different students in an exam.
Marks obtained: 18, 22, 25, 28, 35, 39, 47, 50, 50, 64, 65, 85...
21 is divided into three parts which are in arithmetic progression (A.P.) in such a way that the sum of their square is 179. Find the smallest part.
The marks obtained by 12 students out of a maximum of 30 in a test are given as 25, 28, 24, 22, 25, 18, 20, 22, 19, 23, 22, and 26. Find the sum of the ...
The average weight of 16 people in a group is 75 kg. If the heaviest person who weighs 95 kg is replaced by a new person, and the average weight of the ...
In an A.P a9 = 40, then find sum of first 17 terms of that A.P.
Find the sum of 12th terms of a geometric progression whose 1st term is 8 and common ratio is 2.
