Suppose you had x rupees. Your
father gave you more 6 rupees. You
gave y rupees to your brother. Now
how many rupees you have? You will
buy three shirts with the rupees that
you have now. Write the cost of each
shirt.
You bought 3g rice, 5g flour in a
market. At first you had 500 rupees.
Now you have 300 rupees. How much
rupees you wasted? Suppose you
distribute the 300 rupees among
your 4 sons. Now how much rupees
does your one son get?
If α and β are two unequal angle, which satisfy the equation,
a cos(α) + b sin(β) = c, show that
(i) sin(((α + β)/2)) sec(((α − β)/2)) = (b/c)
(ii) tan((α/2)) tan((β/2)) = ((c − a)/(c + a))
find all such numbers:
if we make its last digit, say k, as its
first digit, the number becomes k
times large as before.
(□□...□k)→(k□□...□)=k×(□□...□k)