Find my number, if it is a two-digit one, one of its digits is 9, and it has remainder 0 when divided by 6.
2 answers:
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Answer:
no solutions exist
Step-by-step explanation:
You can rewrite the denominator as:
-2(2x-6) so the equation becomes:
from which you can see that not only should x ≠ 3, but for all values of x≠3 the equation is false.
Answer:
Step-by-step explanation:
we are given some scenerios and we are to find out the total number of ways after mentioning permutations, combinations, or neither
a. How many ways can a coach choose two co-captains from 16 players in the basketball team?
Combination because both are having same position so order does not matter
16C2 = 120
b. In how many ways can seven questions out of ten be chosen on an examination?
Combinations because order of question does not matter.
10C7 = 10C3 = 120
c. Find the number of ways that 10 women in the finals of the skateboard street competition can finish first, second, and third in the X Games final.
Here order matters. Hence permutation
10P3 = 720
d. A postal zip code contains five digits. How many different zip codes can be made with the digits 0–9? Assume a digit can be repeated.
Here repitition is allowed. So neither permutation nor combination.
No of ways =