EXERCISE 20
1. A die is rolled once. What is the probability of rolling:
(a) 3
(b) 7
(c) an even number
(d) a prime number?
2. Ramesh chooses a date at random in April for a party, Calculate the
probability that he chooses
(a) a Saturday
(b) a Sunday
(c) a Saturday or a Sunday
3. A normal die is rolled. Calculate the probability that the number on the uppermost
face when it stops rolling will be
(a) 5
(b) not 5
(c) an odd number
(d) a prime number (e) a 3 or a 4
(f) a 1 or a 2 or a 3 or a 4.
(g) an even prime number
Answers
Answer:
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Step-by-step explanation:
The emblem is based on that of the Kingdom of Mysore and the Coat of Arms of the United Kingdom and is carried on all official correspondences made by the Government of Karnataka.
Answer:
Isotopes can be defined as the variants of chemical elements that possess the same number of protons and electrons, but a different number of neutrons. In other words, isotopes are variants of elements that differ in their nucleon numbers due to a difference in the total number of neutrons in their respective nuclei. For example, carbon-14, carbon-13, and carbon-12 are all isotopes of carbon. Carbon-14 contains a total of 8 neutrons, carbon-13 contains a total of 7 neutrons, and carbon-12 contains a total of 6 neutrons
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