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Question 68Asked in DSSSB TGT Computer Science (Technical), 13 Sep 2025, Shift 3 (5:00 PM)

Which of the options is the solution of system of linear equation 5x + y + 3z = 20, 2x + 5y + 2z

Which of the options is the solution of system of linear equation 5x + y + 3z = 20, 2x + 5y + 2z = 18, 3x + 2y + z = 14?
  1. Ax=1, y=2, z=3
  2. Bx=2, y=3, z=1
  3. Cx=2, y=1, z=3
  4. Dx=3, y=2, z=1
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Correct answer: (D) x=3, y=2, z=1

Explanation

Check x = 3, y = 2, z = 1: 15 + 2 + 3 = 20, 6 + 10 + 2 = 18 and 9 + 4 + 1 = 14. All three equations are satisfied.

From DSSSB TGT Computer Science PYQ (Technical), 13 Sep 2025, Shift 3 (5:00 PM)

This is question 68 of DSSSB TGT Computer Science PYQ (Technical), 13 Sep 2025, Shift 3 (5:00 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.