An escalator is coming down at a constant speed. Vivek takes 40 steps to reach to the bottom. The time in which he takes 15 steps Samar manages to take 45 steps to reach the bottom. Find no of steps of stationary escalator?
Sol?
E=8^3+9^3+.......+374^3 ... Find the remainder when E is divided by 382 ?
Total no of factors of the expression 62^3-54^3-8^3 is?
Find the probability that a year chosen at random has 53 Mondays.
(Given answer: 2/7; whereas I think it's 5/28)
Guys..please solve & suggest.
- 5/28
- 2/7
- 3/28
- 1/28
0 voters
- What is the unit digit in ( 3^65+6^59+7^71 ) ?
Six bells commence tolling together and toll at intervals of 2, 4, 7, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?
Find number of distinct rectangles having integral sides that are possible such that perimeter is an integer less than 100?
Find out the probability of forming 187 or 215 with the digits 1, 2, 3, 4, 5, 6, 7, 8, 9 when only numbers of three digits are formed and when (i) repetitions are not allowed (a) 12/504 (b) 18/504 (c) 2/504 (d) 24/504 (ii) repetitions are allowed (a) 2/729 (b) 6/729 (c) 11/729 (d) 4/729
1^3 + 2^3 + 3^3 + 4^3 +. . 10 terms is divided by 1^2 + 2^2 + 3^2 + 4^2 + . . .10 terms . Find remainder ?
Find remainder when 4 + 44 + 444 +. . .100 terms. . divided by 7 ?
How many natural numbers N less than 100 satisfy the condition that the sum of the natural numbers from 1 to N is divisible by 15?
What is the area of a right angled triangle which has an inradius of 2cm and a circumradius of 5 cm?
Please explain the solution. Thanks in advance.
Q22
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Remainder of 1776^1816! divided by 2000 ?
Approach?
Q26
Can someone help me out with the 15th question. (Topic:- Ratio and Proportion)
With an average speed of 40kmph, a train reaches its destination in time. If it goes with an average speed of 35kmph, it is late by 15mins. The length of the total journey is?