Question 1
Uma ranked 8th from the top and 37th from bottom in a class. How many students are there in a class?
(A) 47
(B) 46
(C) 45
(D) 44
Question 2
A clock shows the line as 3:30 pm. If the minute hand gains 2 min every hour, then how many minutes will the clock gain by 4:00 am?
(A) 23 min
(B) 24 min
(C) 25 min
(D) 26 min
Question 3
If the price is increased by 10% and the sale (quantity of goods) is decreased by 5%, then what will be the effect on the income?
(A) 5%
(B) 6%
(C) 4.5%
(D) 4%
Question 4
After qualifying, out of 400 professionals, 112 joined industry, 120 started practice and 160 joined as service. There were 32 who were in both practice and service. 40 in both practice and industry and 20 in both industry and service. There were 12 who did all the three. How many could not get any of these?
(A) 88
(B) 244
(C) 122
(D) None of these
Question 5
In an election, there were only 2 candidates – Nishant and Arvind. The total voters were 10,000 and all the voters casted their votes, out of which 20% were declared invalid. If Nishant got 70% of the valid votes, then how much did Arvind got?
(A) 2400
(B) 4000
(C) 3000
(D) 5600
SOLUTIONS TO DAILY CSAT MISSION # 36
1.(C) 2. (D) 3. (A) 4. (C) 5. (D)
Explanations
First of all, “V works only with T in Shift C“. So, Shift C is V and T only.
“S works in Shift A“.
“R works in Shift B“. “Q does not work in the same shift with R“. So, Q works in Shift A.
“P does not work in the same shift with Q“. So, P is in Shift B. And, since “P does not work in the same shift with W” as well, W is in Shift A.
The final list is:
Shift A: Q, S, W
Shift B: P, R
Shift C: T, V
Now, to find out which day is whose day off, it is preferable to draw a table and keep crossing out names:
“P’s day off is Tuesday”. This means no other person has day-off on Tuesday (cross remaining people for Tuesday) and P does not have day-off on any other day (cross P on other days):
Similarly, “S has day off on Sunday”. So, cross out S from all other days, and cross all other people from Sunday:
“No one from Shift A has day-off on Wednesday or Friday”. So, cross off Wednesday and Friday from Q, S and W. “T’s day off is not on Wednesday”. Cross Wednesday and T. “W’s day off is not on the previous day of P’s day off”. Cross out W and Monday. The table has become:
Now, “V’s day off is immediate next day of that of R’s day off”. But since Tuesday is P’s day off (and not R’s), Wednesday cannot be V’s day off. So, cross out Wednesday and V. For Wednesday, only R is then left, which means R’s day off is Wednesday:
Cross off R from the other days apart from Wednesday. “V’s day off is immediate next day of that of R’s day off”. So, V’s day off is Thursday. Cross out V from other days, and other people from Thursday.
W has only Saturday left. So, W’s day off is Saturday. Cross off other people from Saturday.On Friday, only T is left. So, T’s day off is Friday. Cross off T from other days. After that, on Monday only Q is left. So, Q’s day off is Monday. The final table is:
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