Find three machines that can be replaced with hook ups of `(xx5)` machines.

Find three repeater machines that will do the same work as a (xx64) machine. Draw them, or describe them using exponents.

Find two repeater machines that will do the same work as a (xx81) machine.

A machine can increase

Find a repeater machine that will do the same work as a(xx1/8) machine.

Find the single machine that will do the same job as the given hook -up a. a(xx2^(3)) machine followed by (xx2^(-2)) machine. b. a(xx2^(4)) machine followed by (xx(1/2)^(2)) machine. c. a(xx5^(99)) machine followed by a (5^(-100)) machine.

If possible find a hook up of prime base number machine that will do the same work as the give stretching machine. Do not use (xx1) machines.

Your mother purchased a washing machine for Rs. 10,000 from an authorised dealer of the manufacturer with an oral guarantee that the machine will be replaced with a new one if any of its parts becomes defective within 3 months from the date of purchase. The motor of the machine was burnt within 15 days of its purchase. On complainting, the seller refused to replace the machine. Name the redressal agency under the Consumer Protection Act where your mother can file the complaint.

A die is thrown 5 times. Find the probability that an odd number will come up exactly three times.

A man of mass 60 kg is standing on a weighing machine (2) of mass 5kg placed on ground. Another identical weighing machine is placed over man’s head. A block of mass 50kg is put on the weighing machine (1) . Calculate the readings of weighing machines (1) and (2) .

In a press, there are three types of printing machines, P, Q and R. Machine P can print 10,000 pages in 8 hours, machine Q can finish the same task in 10 hours and machine R can finish the same task in 15 hours. All the three machines start the work at 9 : 00 a. m. Machine P breaks down at 11 : 00 a.m. and machines Q and R finish the task. The approximate time of completion of the job is :