Important Mathematics Questions for CTET 2020 : 3rd February 2020 |_00.1
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Important Mathematics Questions for CTET 2020 : 3rd February 2020

Maths Questions

Q1. Simplify: 44666-55777+24321-46678-46635+76545?
सरलीकरण करें: 44666-55777+24321-46678-46635+76545?
(a) -3558
(b) 73456
(c) 145532
(d) None of these/ इनमें से कोई नहीं

Q2. Simplify: (2×26×53+53×53+26×26)
सरलीकरण करें: (2×26×53+53×53+26×26)
(a) 6921
(b) 6241
(c) 6961
(d) 6941

(a) 19396
(b) 11641
(c) 92398
(d) 93674

Q4. What least value must be assigned to x so that the number 479×8584 is divisible by 7?
x को कौन सी सबसे छोटी संख्या माना जाए जिससे 479×8584 संख्या 7 से विभाजित हो जाए?
(a) 8
(b) 6
(c) 9
(d) All of the above/ उपरोक्त सभी

Q5. If ‘a’ is a negative Integar such that (a²+16-16a) is exactly divisible by ‘a’ find the possible value ‘a’.
यदि ‘a’ एक ऋणात्मक पूर्णांक है ताकि (a²+16-16a)   ‘a’ से पूर्णत विभाजित हो जाए. ‘a’ संभावित मान ज्ञात करें.
(a) -2
(b) 3
(c) 6
(d) All of the above/ उपरोक्त सभी

Important Mathematics Questions for CTET 2020 : 3rd February 2020 |_20.1
(a) 16
(b) 36
(c) 25
(d) 42

Q7. A number when divided by 56 leaves remainder 7 when the cube of the same number is divided by 7, find the remainder.
एक संख्या जब 56 से विभाजित की जाती है तो उसका शेषफल 7 होता है. उसी संख्या के घन को 7 से विभाजित करने पर क्या शेषफल आएगा?
(a) 3
(b) 5
(c) 0
(d) 6

Q8. 123×?×23= 39,606
(a) 47
(b) 14
(c) 42
(d) 44

Q9. (x+y)=42 and xy=437, then what is the value of x²+y² ?
(x+y)=42 और xy=437, तो x²+y² का मान ज्ञात करें?
(a) 856
(b) 825
(c) 890
(d) 279

Q10. 21² + 22² + 23² ……. + 30² =?
(a) 6000
(b) 6585
(c) 1256
(d) 15025

Solutions

S1. Ans.(a)
Sol. 44666-55777+24321-46678-46635+76545
= 145532-149090
= -3558

S2. Ans.(b)
Sol. (2×26×53+53×53+26×26)
(a²+b²+2ab)= (a+b)²
(53+26)²= (79)²
= 6241

S4. Ans.(a)
Sol. 479×8584÷7
The value of x = 8

S5. Ans.(a)
Sol. Let a= -2
A²+16-16a = (-2)²+16+32
= 4+16+32
= value of a = -2

S7. Ans.(c)
Sol. 56+7 = 63
(63)³= 250047
= 250047÷7
Remained = 0

S9. Ans.(c)
Sol. x+y= 42
xy= 437
(x+y)² = x²+y²+2xy
(42)² = x²+y²+2×437
1764 = x²+y²+874
x²+y² = 890

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