Download App

Permutations — MATHS STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceMATHSPermutations2 Marks
Question
How many three-digit odd numbers are there?
✓

Answer

The three digit numbers are 100 to 999 inclusive so there are 999 - 100 + 1 = 999 - 99 = 900 So, 900 three digit numbers If half of all numbers is odd then half of 900 is 450, there are 450 odd positive 3 digit numbers.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "(Each question 2 marks)" from Permutations→Permutations — all question types→MATHS STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

In $\triangle\text{ABC},$ if a= 18, b = 24 and c = 30 and $\angle\text{C}=90^{\circ},$ find $\sin\text{A},\sin\text{B}$ and $\sin\text{C}.$
→
Evaluate $\mathop {\lim }\limits_{x \to 0} \frac{{ax + b}}{{cx + 1}}$
→
Find the sun of first n odd natural numbers.
→
A box contains 1 red and 3 black balls. Two balls are drawn at random in succession without replacement. Write the sample space for this experiment.
→
Differentiate the following functions with respect to x:$\frac{\text{2x}-1}{\text{x}^2+1}$
→
Prove that: $\frac{\cos\text{x}}{1-\sin\text{x}}=\tan(\frac{\pi}{4}+\frac{\pi}{2})$
→
Find the ratio in which the YZ-plane divides the line segment formed by joining the points (-2, 4, 7) and (3, - 5, 8).
→
Differentiate the following functions with respect to x:$\frac{\text{x}+\text{e}^\text{x}}{1+\log\text{x}}$
→
Find the coordinates of a point on y-axis which are at a distance of $5 \sqrt2$ from the point P(3, -2, 5).
→
Find the equation of a line for which: $\text{p}=8,\alpha=300^\circ$
→