The Pie chart given below shows the percentage-wise break up of students studying various specializations A.B.C.D.E and F in M.B.A. course in a university. The total numberof students howtook admission in MBA in that university is 8000. Study the chart carefully and answer the questions given below.
The total numberof students studying E as specialization.
The ratio of the students studying C as specialization to students studying F as specialization is.
If x : y represent the ratio of the numberofstudents studying F and C to the numberof students studying D, then x - y =
Study the following data and answer the questions.
"In a study of 1500 rivers the following data were reported: 520 rivers were polluted by sulphur compounds, 335 were polluted by phosphates, 425 were polluted by crude oil, 100 were polluted by both crude oil and sulphur compounds; 180 were polluted by both sulphur compounds and phosphates; 150 were polluted by both phosphates and crude oil and 28 were polluted by sulphur compounds, phosphates and crude oil."
The number of the rivers polluted by at least one of the three impurities is
The number of the rivers polluted by exactly one of the three impurities is
In a certain code, the $$r^{th}$$ letter of the English alphabet is coded as $$r + 10(\equiv mod 26)^{th}$$ letter cyclically. For example, $$4^{th}$$ letter D is coded as $$14^{th}$$ letter N and $$24^{th}$$ letter X is coded as $$8^{th}$$ letter H (because $$r + 10(\equiv mod 26)$$). The reverse process is used for decoding. Basing on this coding and decoding, answer questions.