Question
The speed of a boat in still water is 10 km/hr. It
covers (upstream) a distance of 42 km in 8 hours. The speed (in km/hr) of the stream isSolution
Upstream speed of boat = Distance/Time = 42/8 = 21/4 = 5.25 km/hr Therefore, speed of current = 10 – 5.25 = 4.75 km/hr
The value of i ∙ (j × k) + j∙ (i× k)+ k∙ (i × j) =Â
Evaluate
Which of the following is not a binary number?
The number of five–digit telephone numbers having at least one of their digits repeated is
A sum of Rs.8200 is to be divided among 6 brothers, 5 sisters and 2 aunts. If each sister receives thrice as much as each aunt and each brother receives...
₹ 27,600 is distributed among Thomas, David and Vijay in such a manner that 1/7 of the share of Thomas, 1/3 rd of the share of David and 1/2 of the sh...
(0.04)5 × (0.2)4 ÷ (0.008)2 = (0.2)?
__________is the process that connects to a network without the use of cables.
If the sum of the digits of a three digit number is subtracted from that number, then it will always be divisible by
The value of λ for which the 2 vectors 2i – j + 2k and 3i + λ j + k are perpendicular isÂ
