In the following sum, ? stand for which digit? `?+1?+2?+?3+?1=21 ?` 4 (b) 6 (c) 8 (d) 9 (e) None of these

Which of the following digits will replace the H marks in the following equation? 9H + H8 + H6 = 230 3 (b) 4 (c) 5 (d) 9 (e) None of these

(1.6xx3.2)/(0.08)=?( a) 0.8(b)6.4(c)8(d)64(d) None of these

The sum of all 2-digit number divisible by 5 is (a) 945 (b) 1035 (c) 1230 (d) 1245 (e) None of these

How much such numbers are there in the following series, each of which is immediately preceded by 6 3 8 6 8 4 2 6 9 8 4 8 6 2 6 8 4 8 1) None 2) 1 3) 2 4) 3 5) More than three

Ratio in which the line 3x + 4y = 7 divides the line segment joining the points (1, 2) and (-2, 1) is (a) 3 : 5 (b) 4 : 6 (c) 4 : 9 (d)None of these

Sum of all the 4-digit numbers which can be formed using the digits 0, 3, 6, 9 (without repetition of digits) is 119988 (b) 115992 (c) 3996 (d) None of these

The correct fraction in the box (\ )\ i s\ \ (\ )-5/8=1/4 6/8 (b) 7/8 (c) 1/2 (d) None of these

If C_r stands for ^nC_r and sum_(r=1)^n (r.C_r)/(C_(r-1)=210 then n= (A) 19 (B) 20 (C) 21 (D) none of these

Let three matrices A=[2 1 4 1]; B=[3 4 2 3]a n dC=[3-4-2 3], then 6 (b) 9 (c) 12 (d) None of these

Study the set of numbers given below and answer the questions which follow: 972 682 189 298 751 If in each number, second and the third digits are interchanged, what will be the sum of first digit of the smallest number and last digit of highest number? 1) 7 2) 6 3) 9 4) 8 5) None of these