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The correct answer is C
The mean age of 30 students was calculated as 15 years. However, it was later discovered that one student's age was mistakenly entered as 15 years inste...
If both the roots of x 2 + kx + 49 = 0 are real and equal, then find the value of 'k'.
If x2 – xy + y2 = 16 and x4 + x2y2 + y4 = 320 then find x2 + xy + y2...
If (a - b - c) = 6, and (ab - bc + ca) = 117, then find the value of (a2 + b2 + c2)
If (r + s + t) = 12 and (rs + st + tr) = 60, then find the value of (r² + s² + t²).
A certain number of students from school X appeared in an examination and 30% students failed. 150% more students than those from school X, appeared in ...
If (a - b - c) = 6, and (ab - bc + ca) = 117, then find the value of (a 2 + b 2 + c 2 )
If, p³ + q³= 485 and (p + q = 5), then find the value of [(1/p) + (1/q)]
If a + b + c = 8, a² + b² + c² = 18 and ab + b c+ ca = 12, then what is the value of a³ + b³ +c³ –3abc?
If a =-10, b= -6 and c=18, then what is the value of (3abc)/4.
