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21. Find one angle of an equilateral triangle.
(A)60 degree
(B)90 degree
(C)45 degree
(D)30 degree


22. If the mean (average) of 5 numbers is 5.4 what is the total sum of these numbers ?
(A)20
(B)24
(C)26
(D)27


23. If x = 5, y = 3, z = 9 find the value of 4x – 3y + 7z.
(A)64
(B)74
(C)84
(D)94


24. At what rate of simple interest will Rs. 525/­ amount to Rs. 588/­ at the end of 3 years.
(A)4%
(B)6%
(C)8%
(D)10%


25. Find the square root of 15876
(A)156
(B)146
(C)126
(D)116