Page 158 - sscbbb

मदद x- = 1, तो ( ) का भान क्मा है ?
[A] ±√5
[B] 2/5 [C] ±2/√5 [D] ±√5/2 16 August 2017 Evening Shift
150. If x + y + z = 0, then what is the value of (3y2 + x2 + z2)/(2y2 - xz)? मददx+y+z=0,तो(3y2 +x2 +z2)/(2y2 -xz)काभानक्माहै?
17 February 2018 SSC MAINS
[A] 2 [B] 1 [C] 3 /2 [D] 5/3 151. If P = 7 + √ and PQ = 1, then what is the value of 1/P2 + 1/Q2 ?
मददP=7+ √ ,औयPQ=1तो1/P2 +1/Q2 काभानक्माहै?
17 February 2018 SSC MAINS
[A] 196 [B] 194 [C] 206 [D] 182 152. If a3 + 3a2 + 9a = 1, then what is the value of a3 + (3/a) ?
मददa3 +3a2 +9a=1,तोa3 +(3/a)काभानक्माहै?
17 February 2018 SSC MAINS
[A] 31 [B] 26 [C] 28 [D] 24 153.x,yandzarerealnumbers.Ifx3 +y3 +z3 =13,x+y+z=1andxyz=1,then what is the value of xy + yz + zx?
x,yऔयzिास्तविकसख्ॊ माएॉहैं।मददx3 +y3 +z3 =13,x+y+z=1 औयxyz=1है,तोxy+ yz + zx का भान क्मा है?
17 February 2018 SSC MAINS
[A] – 1 [B] 1 [C] 3 [D] – 3 154. If (a + b)/c = 6/5 and (b + c)/a = 9/2, then what is the value of (a + c)/b?
मदद (a + b)/c = 6/5 औय (b + c)/a = 9/2 है , तो (a + c)/b का भान क्मा है?
17 February 2018 SSC MAINS
[A] 9/5 [B] 11/ 7 [C] 7/11 [D] 7/4 155.Ifx3 +y3 +z3 =3(1+xyz),P=y+z–x,Q=z+x–yandR=x+y–z,then what is the value of P3 + Q3 + R3 – 3PQR?
मदद x3 +y3 +z3 =3(1+xyz),P=y+z–x,Q=z+x–yऔयR=x+y–zहै,तो P3 + Q3 +R3 –3PQRकाभानक्माहै?
17 February 2018 SSC MAINS
[A] 9 [B] 8 [C] 12 [D] 6
156. If x1x2x3 = 4(4 + x1 + x2 + x3) then what is the value of [1/(2 + x1)] + [1/(2 + x2)] + [1/(2 + x3)]?
मददx1x2x3=4(4+x1 +x2 +x3)है,तो[1/(2+x1)]+[1/(2+x2)]+[1/(2+x3)]?
[A] 1 [B] 1/2
17 February 2018 SSC MAINS
[C] 2 [D] 1/3
166