Probability

JEE Main 2025 (Online) 23rd January Morning ShiftMCQEasy📈 Topic in 37% papers+4−1

Ques. 1JEE Main 2025, 23 January (Morning Shift)

One die has two faces marked 1 , two faces marked 2 , one face marked 3 and one face marked 4 . Another die has one face marked 1 , two faces marked 2 , two faces marked 3 and one face marked 4. The probability of getting the sum of numbers to be 4 or 5 , when both the dice are thrown together, is

Answer

(4) 12

Solution

Faces: die I (1,1,2,2,3,4), die II (1,2,2,3,3,4); total pairs =36.

Sum 4: (1,3),(2,2),(3,1) 2 2+2 2+1 1=9

Sum 5: (1,4),(2,3),(3,2),(4,1) 2 1+2 2+1 2+1 1=9

Exclusive events, so add: P= 9+936= 12

Answer: (4)

Keep practising — Probability

Ques. 2JEE Main 2025, 23 January (Evening Shift)

A board has 16 squares as shown in the figure : [figure] Out of these 16 squares, two squares are chosen at random. The probability that they have no side in common is :

35
45
2330
710

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All JEE Main Mathematics chapters

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