TS EAMCET 19-July-2022 Shift 1 Solved Paper

There are total 8 cards, which are multiples of 5 i.e. 4 cards of 5 and 4 cards of 10 .
There are total 16 cards of prime number i.e. 4 cards each of 2,3,5 and 7 .
Case I When 5 number cards are selected from multiple of 5 .
Number of ways of selecting the card
‌=‌4C1×‌15C1
‌=4×15=60
Case II When 10 number cards are selected from multiple of 5 , number of ways of selecting the
‌ card ‌=‌4C1×‌16C1
∴P( card having prime number and a card having a number which is multiple of 5 )
‌=‌

60+64

‌52C2

‌=‌

124×2

52×51

=‌

62

663