instruction:
You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
question:
Question: In how many different number of ways 6 men and 4 women can sit on a shopa which can accommodate persons?

 Option A: 200

 Option B: 210

 Option C: 90

 Option D: 250

 Option E: 270
answer:
Option C


question:
Question: What is the units digit of 18! + 5 ?

 Option A: 2

 Option B: 3

 Option C: 4

 Option D: 5

 Option E: 6
answer:
Option D


question:
Question: Two unbiased coins are tossed. What is the probability of getting at most one head?

 Option A: 1/2

 Option B: 1/4

 Option C: 2/3

 Option D: 3/4

 Option E: 5/7
answer:

Option D