In a well of 20feet depth, a frog jumps 5feet up in the morning and comes 4feet down in the evening, on which day the frog gets out of the well.
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(7*7=49)(4*9=36)(3*6=18) (1*8=8)
Two pipes A and B when working alone can fill a tank in 36 minutes and 45 minutes respectively. A waste pipe C can empty the tank in 30 minutes.First A and B are opened After 7 minutes. C is also opened . In How much time will the tank be full ?
ab*cd=EEE the ab*d=?
Consider a function which, for a given whole number n, returns the number of ones required when writing out all numbers between 0 and n. For example, f(13)=6. Notice that f(1)=1. What is the next largest n such that f(n)=n?
which country is following one party system
Complete the series 2, 7, 24, 77,__ (hint: 2*12= 24, 7*11= 77, therefore 24*10= 240)
A person gives a secret to two other persons in 5 minutes. How long will he take to tell the secret to 768 people?
A number when divided by D leaves a remainder of 8 and when divided by 3D leaves a remainder of 21 . What is the remainder left, when twice the number is divided by 3D?
?..............................M ,if the largest of X consecutive integers is M ,what is the smallest?
If x + 8y = 20 and x = -3y, then y =
be * be = acb a,b,c,e are non zero numbers find b,e.
A finishes a work in 12 days and B finishes same work in 14 days.If they work for a day alternately with A beginning, how many days will it take to complete the work?