8/81(9n-1+1/10^n )
Solve this
How to solve this one..
Guys can you simplify the language of q 11 , am not able to fully understand % stock mentioned role.
Guys, how do we solve the below question:
x2 + kx + 1 and x2 + x + k have common real root. How many values of k are possible?
Unable to understand the explanation
Please can some one explain Q 23
Richa has three types of boxes viz. large, medium and small. She plays a game in which she placed 9 large boxes on the table. She puts 5 medium boxes each, in a few of the large boxes then she puts 5 small boxes each, in few of the medium boxes. If the number of boxes that have been left empty in the game is 41, then how many boxes were used in the game by Richa?
Ramlal has a safe which has five locks with different keys and can only be opened by inserting all the keys in their correct locks. Ramlal’s servant Chhotu steals the keys from Ramlal and tries to open the safe. He observes that there are five lights above the locks and whenever he inserts all the keys inside the locks, some of the lights flash. He then remembers his master saying that the flashing lights indicate how many keys are inserted inside right locks i.e., if only one light flashes, only one key is inside the right lock. Find the probability that when he inserts the keys, exactly two lights flash.
a.1/6 b.5/11 c.1/12 d.4/9
Please solve
Kindly explain the approach. If we take a=2, b=8 and c =5, we get total cost as rs131. But 7 is the answer. Does between mean inclusive or exclusive?
Please explain 34th question
Remainder when 9^1357 divided by 15?
Happy Diwali to all.
a:(b+c)=1:6,b:(c+a)=2:5,then a:b:c=?
Please provide approach
Guys please hep with this question ?? Any short logical tricks The salary of a person is increased by Rs. 4800 and the rate of tax is decreased by 2% from 12% to 10%. The effect is such that he is now paying the same tax as before. If in both the cases, the standard tax deduction is fixed at 20% of the total income, find the increased salary?
Q 23.
Q9