Periyar University 2008 B.E Electronics

Ans: 30 milliseconds





62) A person who decided to go weekend trip should not exceed eight hours driving in a day avg. speed of forward journey is 40 mph due to traffic in Sundays the return journey avg. speed is 30 mph. How far he can choose a picnic spot.



Ans: ranging from 120 and 140 miles





63) Car is filled with 4 and half gallons of oil for full round trip. Fuel is taken 1/4 gallons more in going than coming. What is the fuel consumed in coming up.

Sol: Let fuel consumed in coming up is x.

Thus formula is: x+1.25x=4.5

Ans: 2gallons





64) 40% employees are male if 60% of supervisors are male so for 100% is 26.4%so the probability is …………..

Ans: 0.264





65) Gavaskar avg. in 1st 50 innings was 50. After the 51st innings his avg. was 51 how many runs he made in the 51st innings

Sol: 1st 50 ings.- run= 50*50=2500

51st ings. - Avg 51. So total run =51*51=2601.

So run scored in that ings=2601-2500=101 runs.

Ans: 101 runs





66) Hansie made the subsequent amounts in 7 games of cricket in India : Rs.10, Rs.15, Rs.21, Rs.12, Rs.18, Rs.19 and Rs.17 (all figures in crores of course).Find his avg. earnings.

Ans: Rs.16 crore





67) avg. of five numbers is -10 sum of three numbers is 16, what is the avg. of other 2 numbers?

Ans: -33





68) If A, B and C are the mechanisms used separately to decrease the wastage of fuel by 30%, 20% and 10%. What will be the fuel economy if they were used combined. Ans: 20%



69) In 80 coins 1 coin is counterfeit what is minimum number of weighing to obtain out counterfeit coin

Sol: the minimum number of weightings needed is just 5.as shown beneath



(1) 80->30-30

(2) 15-15

(3) 7-7

(4) 3-3

Earning:   Approval pending.