I want to know how can we imagine an angle which more than $360^\circ$. Since when it reaches its initial side after completing one rotation of $360^\circ...

**The number sequence $1,9,8,2...$ is defined so that $t_n$ is the last digit of $t_{n-1}+t_{n-2}+t_{n-3}+t_{n-4}$ for $n>4$ Will the numbers $3,0,4,4$...

$$2/3-2/9+2/27-2/81+\cdots$$ The formula is $$\mathrm{sum}= \frac{A_g}{1-r}\,.$$ To find the ratio, I did the following: $$r=\frac29\Big/\frac23$$ Then go...

Question: Find the angle between the diagonal of a cube and one of its edges. I know how to do this question but in particular I do not understand why $\v...

I've been working on some textbook problems, where I've had to convert vector equations into scalar equations. I've understood it for the m...

I know that a Binomial Distribution, with parameters n and p, is the discrete probability distribution of the number of successes in a sequence of n indep...

If no repetitions are allowed, how many 9-digit numbers can be formed from the digits 1, 2, 3, …, 9? How many of these are divisible by 4 ? My Attempt: th...

Justify that $\tan 1^\circ$ is an irrational number. I don't know how to go about it

A bridge hand consists of 13 cards from a standard deck of 52 cards. What is the probability of getting a hand that is void in exactly one suit, ie consis...

Please explain and help. Thank you in advance