Exams

If secθ + tanθ = 4, then secθ - tanθ = ?

At a telephone exchange, three phones ring at intervals of 20 sec, 24 sec and 30 seconds. If they ring together at 11 : 25 a.m, when will they next ring together?

How many natural numbers between 15 and 85 are divisible by 7?

What is the effective resistance (in Ω) of two resistors 12 Ω and 24 Ω connected in parallel?

Ghatotkacha (who ruled in the years 290–305 B.C.) was a king from which dynasty?

In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.

Statement 1 : All flowers are leaves.
Statement 2 : Some flowers are plants.

Conclusion I : Some leaves are plants.
Conclusion II : Some plants are flowers.

Big landlords or warrior chiefs in the seventh century were acknowledged as _________ by the existing kings?

Which blood group is universal donor?