A student has a 30% chance of guessing a multiple-choice question correctly. If there are 5 such questions, what is the probability that the student gets exactly 2 correct?

Jawaban: About 0.132

Binomial probability: C(5,2)(0.3)²(0.7)³ = 10×0.09×0.343 ≈ 0.309, not 0.132. Wait, the correct value is 0.309, so the correct option should be about 0.309. Let's recalc: 0.3²=0.09, 0.7³=0.343, product=0.03087, times 10=0.3087≈0.309. So answerIndex should be 1 if options are as given. But I set answerIndex 0 incorrectly. I need to fix. Let's redo this question properly.