Among $M, T, R$ and $P, M$ is older than only $P.$ $T$ is older than $R.$ Who among them is the oldest?

If the position of the first and the sixth digits of the sequence of numbers $8, 9, 0, 3, 2, 1, 4, 6, 7, 5$ are interchanged,the second and the seventh and so on,which number would be seventh from the right end?

In a row of $16$ boys,when Pramod was shifted by two places towards the left,he became $7^{th}$ from the left end. What was his earlier position from the right end of the row (in $^{th}$)?

In a row of children facing North,Ritesh is $12^{th}$ from the left end. Sudhir,who is $22^{nd}$ from the right end,is $4^{th}$ to the right of Ritesh. How many children are there in the row in total?

Among $B, F, J, K$ and $W$ each having a different weight, $F$ is heavier than only $J.$ $B$ is heavier than $F$ and $W$ but not as heavy as $K.$ Who is the third heaviest among them?

Which two months in a year have the same calendar?