A. It was an unusual book launch.

I-bots has developed a highly advanced prototype of robots. A major flaw in these robots is that they
dismantle each other when they are together. Unaware of this fact, a new scientist in the
organization places 6 of these robots together in a room and goes out for some work. The robots
choose one amongst themselves to be dismantled first and all the robots simultaneously dismantle
the chosen robot and then proceed to choose another one from the remaining and continue this
way. In how much time will there only be one robot in working condition if a robot can dismantle
another robot in two hours?

Out of 100 schools in a town, the number of schools having a playground was 30, and all these schools had neither a library nor a laboratory. The number of schools having a laboratory only was twice the number of those having a library only. The number of schools having a laboratory as well as a library was one-fourth the number of those having a laboratory only. The number of schools having either a laboratory or a library or both was 35.
How many schools had none of the three, viz. laboratory, library or playground?

A no. is chosen at random from the no. 10 to 99. By seeing the no. a man will sing if the product of the digits is 12.If he chooses 3 nos. with replacements then the probablty. that he will sing atleast once...?

So I threw the clothes, books, shoes, and toiletries back into the suitcase, carried it out to the driveway, and dumped the contents onto the pavement, ready to stomp on any other cockroach stowaways. But there was only the one cockroach, dead and stiff. As he lay on the pavement, I leaned closer to him. His legs were curled under his body. His head was tilted at a sad angle. Sad?

Choose the option in which the usage of the word is Incorrect or Inappropriate

NEAT

1. He prefers to take his drink neat.
2. He arranged the chairs in neat rows for the concert.
3. It was a neat idea which was accepted by the committee right away.
4. The teacher asked him to be more neat in his work.

S is a 6 digit number beginning with 1. If the digit 1 is moved from leftmost to rightmost place, the number obtained is three times of S. what is the product of digits of S?

Consider the positive integers that such that its digits are either 1,2 or 3. Define a function f such that f(N) = the number of positive integers consisting of only 1, 2 , and 3 whose digits sum to N. find f(10)

How many of the first 1200 natural numbers are either prime to 6 or 15 ???