Simplification Questions

• If x + y = 12 and xy = 32, then what is the value of x2 + y2 ?
• If cosC + cosD = x, then value of x is
• What is the value of cosec -150°?
• If tanA - cotA = x, then value of x is?
• Directions: What value should come in place of question mark (?) in the following question? 69÷3×0.85+24.5-13.8=?
• Direction: What value should come in place of the question mark (?) in the following question? 534.596 + 61.472 - 496.708 = ? + 27.271
• Direction: What will come in place of the question mark (?) in the following question? 504÷42x7-63+28 = ?
• Directions: What value should come in place of question mark (?) in the following question? 150% of 460+24% of 650=?
• Direction: What value should come in place of the question mark (?) in the following question? 12.5×14÷8.75+42=50+?
• What is the equation of the line passing through the point (-1,3) and having x-intercept of 4 units?
• What will come in the place of question mark (?) in the following question (You do not have to calculate the exact value)? 24.97% of 84.01 ÷ 6.995 = ?
• What approximate value should come at the place of question mark (?) in the following questions (You are not expected to calculate the exact value). (111.93 × 5) ÷ 14.02 = 11.002 + ?
• What will come in the place of question mark (?) in the following question (You do not have to calculate the exact value)? √(3099.985 ÷ 62.001 + 14.001) = ?
• What will come in the place of question mark (?) in the following question (You do not have to calculate the exact value)? (184.002 - 29 ÷ 5) × 29.997 = ?
• What will come in the place of question mark (?) in the following question (You do not have to calculate the exact value)? 53.01 - 345.02 ÷ 22.99 = 2 ×(?)
• What should come in place of question mark (?) in the following question? (You do not have to calculate the exact value.) (√80.997 - √25.001) × (√120.98 + √16.02) = ?
• If a - 1a =7,then a2 + 1a2 =?
• If 'Q ' means ' +', 'J ' means ' X',T ' ' means '- ' and 'K ' means ' ÷ ', then what is the value of18K3Q7J ?
• Out of the 60 students of a class, 29 took Mathematics, 32 took Biology and 8 took none of the two subjects. How many students took both Mathematics and Biology?
• ( 1155 ) +(18 − 6) × 9 =?