q: The length of a rectangle is increased by 45% and its breadth is decreased by 20%. What is the effect on its area?
Options:
(A) 1288
(B) 1299
(C) 1000
(D) 10000
(E) 11600
a: Stream of consciousness: 100 * 100 = 10000
145 * 80 = 11600 The answer is (E).


question: The sale price sarees listed for Rs.400 after successive discount is 10% and 5% is?
Options:
(A) 228
(B) 277
(C) 342
(D) 291
(E) 112
answer: Stream of consciousness: 400*(90/100)*(95/100) = 342 The answer is (C).


q: A no. when divided by the sum of 555 and 445 gives 2times their difference as quotient & 50 as remainder. Find the no. is?
Options:
(A) 145646
(B) 236578
(C) 645353
(D) 456546
(E) 220050
a: Stream of consciousness: (555 + 445) * 2 * 110 + 50 = 220000 + 50 = 220050 The answer is (E).


question: The average of twelve numbers is 7. The average of first nine numbers is 6 and the average of last two numbers is 10. What is the middle number?
Options:
(A) A) 9
(B) B) 10
(C) C) 12
(D) D) 7
(E) E) 13
answer: Stream of consciousness: The total of twelve numbers = 12X7 = 84
The total of first 9 and last 2 numbers is = 9 X 6+2 X 10 = 74
So, the middle number is (84 - 74 ) = 10 The answer is (B).


q: The average mark obtained by 22 candidates in an examination is 49. The average of the first ten is 55 while the last eleven is 40 .The marks obtained by the 11th candidate is ?
Options:
(A) 22
(B) 0
(C) 99
(D) 88
(E) 66
a: Stream of consciousness: It is clear that 22 x 49 = 10 x 55 + K + 11 x 40 ⇒⇒ K = 88 The answer is (D).


q: How many digits are in the number 50^8 × 8^3 × 11?
Options:
(A) 18
(B) 20
(C) 19
(D) 22
(E) 17
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
Stream of consciousness: Whenever you are asked to find the number of digits, try to bring the number in multiples of 10. This way, we can wasily calculate the umber of 0's through the powers of 10
50^8 × 8^3 × 11 = (5^2*2)^8*2^9*11 = 5^16*2^17*11 = 2*11*10^16 = 22*10^16
Hence we would have 16 trailing 0's and the three digits from 22
Total digits = 2 + 16 = 18 The answer is (A).