Question
How many numbers are there between 99 and 1000 such that
the digit 8 occupies the units place?Solution
These are of the form _ _ 8, where the last digit is 8.
So the units digit = 8.
Now, the hundreds digit can range from 1 to 9 (because it's a 3-digit number).
The tens digit can range from 0 to 9.
- Hundreds digit: 1 to 9 → 9 choices
- Tens digit: 0 to 9 → 10 choices
- Units digit: fixed as 8 → 1 choice
So, total number of such numbers = 9 x 10 x 1 = 90
What was the estimated record foodgrain production for 2023-24 as per the Union Agriculture Ministry?
Waves that are required for long distance wireless communication are –
What does the letter 'S' stand for in "ASEEM," portal, which acts as a directory of skilled workforce?
Consider the following in regards to Kumaon Commissionary during British rule:
1. Almora Jail was established in 1916
2. Pauri Jail was es...
Which is the largest national park in India?
Which of the following statements is/are correct?
1.Photochemical smog is formed by the reaction of nitrogen oxides (NOx) and volatile organic co...
Which Country Recorded the world's 1st human death from H3N8 bird flu?
Which state government recently approved the state's first-ever witness protection scheme to ensure the safety of witnesses during investigations and tr...
Which player did Iga Swiatek defeat to win the Madrid Open?
Consider the following statements about Dengue:
1.Dengue is a mosquito-borne tropical disease caused by a virus.
2.It is transmitted princ...
