BANK IBPS RRB PO Mock Test Series 2025 (Pre + Mains) Quantitative Aptitude Probability

There are 30 students in a class. Two monitors are selected. One is girl and one is boy. Number of boys are 20 and number of girls are 10. In how many ways can monitors be selected?

1

140

2

200

3

240

4

360

5

180

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