ETEA stands for Educational Testing and Evaluation Agency, it is an educational entity established in 1998 by KPK government. In order to get admission in the public sector Medical Colleges of KPK, the students have to undergo KPK ETEA entrance test, which is a requirement. Hundreds and thousands of students take this test each year. The test is based on the courses of FSc and A levels including the subjects: Physics, Chemistry, Mathematics and English. ETEA is a highly competitive and challenging test based on the student’s previous knowledge of FSc or A levels.
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In a triangle ABC, A = 45o, then the value of (1 + cot B)(1 + cot C) is equal to?
Easiest way to solve such questions is to assume angles of triangle;
A = 45o
A + B + C = 180o
B + C = 180 – 45o = 135o
Let’s take, B = 90o & C = 45o
= (1 + cot 90o) (1 + cot 45o)
= (1 + 0) (1 + 1)
= 1 x 2 = 2
Which of the following numbers lie on the imaginary axis of the Argand diagram?
- 8 + 3i
- 0 + 3i
- 8 + oi
- None of the above
0 + 3i
Only B has no real part so its lies on the imaginary axis of the Argand diagram.
Probability & Permutations
If five digit numbers are formed from 1, 2, 3, 4, 8. What is the probability of forming a number with 2 and 8 not next to each other?
So probability of 2 and 8 not next to each other is = 72/120 = 3/5