TASK DEFINITION: Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
PROBLEM: Problem: 4, 12, 48, 240, 1440, 10080,80640 (... )
Options: a. 7620, b. 10080, c. 6200, d. 10020, e. 725760

SOLUTION: e

PROBLEM: Problem: a person incurs a loss of 5 % be selling a watch for rs. 1140. at what price should the watch be sold to earn 5 % profit
Options: a. rs. 1200, b. rs. 1230, c. rs. 1260, d. rs. 1290, e. none of these

SOLUTION: c

PROBLEM: Problem: the probability is 1 / 2 that a certain coin turns up heads on any given toss. if the coin is tossed 6 times, what is the probability that the coin turns up tails on at least one of the tosses ?
Options: a. 15 / 16, b. 21 / 32, c. 31 / 32, d. 63 / 64, e. 51 / 64

SOLUTION:
d