q: The average amount with a group of seven numbers is Rs. 20. If the newly joined member has Rs. 50 with him, what was the average amount with the group before his joining the group?
Options:
(A) 22
(B) 27
(C) 15
(D) 77
(E) 16
a: Total members in the group = 7
Average amount = Rs. 20
Total amount with them = 7 * 20 = Rs. 140
One number has Rs. 50. So, the amount with remaining 6 people = 140 - 50 = Rs. 90
The average amount with them = 90/6 = Rs. 15. The answer is (C).
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q: A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.150. Find the unknown rate of two blankets?
Options:
(A) 450
(B) 200
(C) 250
(D) 300
(E) 350
a: 10 * 150 = 1500
3 * 100 + 5 * 150 = 1050
1500 â€“ 1050 = 450 The answer is (A).
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q: A no.when divided by 158 gives a remainder 50, what remainder will be obtainedby dividingthe same no.16?
Options:
(A) 10
(B) 11
(C) 12
(D) 13
(E) 14
a: 158 + 50 = 208/16 = 13 (Remainder) The answer is (D).
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q: Find the remainder when 6^23 is divided by 5 ?
Options:
(A) 3
(B) 2
(C) 1
(D) 0
(E) 4
a:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
6^23 = 6^(4*5+3) = 6^(20) * 6^3 last 3 digits = 216
216/5 remainder = 1 The answer is (C).
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