Question

If a b and c are three numbers chosen randomly and with replacement

Answer 1

We can write the given condition as;

Cost of digging a well for first metre = Rs.150

Cost of digging a well for first 2 metres = Rs.150 + 50 = Rs.200

Cost of digging a well for first 3 metres = Rs.200 + 50 = Rs.250

Cost of digging a well for first 4 metres =Rs.250 + 50 = Rs.300

And so on..

Clearly, 150, 200, 250, 300 … forms an A.P. with a common difference of 50 between each term.

Answer 2

Step-by-step explanation:

If `a` and `b` and `c` are 3 numbers not necessarily different chosen randomly and with replacement from the set `{1,2,3,4,5}`, then the probability that `ab+c` is even is. CBSE Board Exam Date sheet 2020 has been released for class 10 and 12.