In India, ……………….. female babies are born against 100 male babies.
A) 103
B) 100
C) 95
D) 90
1 Answers
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Let `a_(1), a_(2),….` and `b_(1),b_(2),….` be arithemetic progression such that `a_(1)=25`, `b_(1)=75` and `a_(100)+b_(100)=100`, then the sum of firs
Correct Answer - C `(c )` `(a_(100)+b_(100))-(a_(1)+b_(1))=99dimpliesd=0` `:.` Sum of series `=(100//2)(a_(100)+b_(100)+a_(1)+b_(1))` `=50(100+100)` `=10000`
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The value of `((100),(0))((200),(150))+((100),(1))((200),(151))+......+((100),(50))((200),(200))` equals (where `((n),(r ))="^(n)C_(r)`)
Correct Answer - A `(a)` Writing `((200),(r ))=((200),(200-r))`, we have `((100),(0))((200),(50))+((100),(1))((200),(49))+((100),(2))((200),(48))+......+((100),(50))((200),(0))` `=` Coefficient of `x^(50)` in the expansion of `(1+x)^(100)(x+1)^(200)` `=` Coefficient of `x^(50)` in the binomial expansion of `(1+x)^(300)` `=((300),(50))`
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A cell can be balanced against 110 cm and 100 cm of potentiometer wire respectively when in open circuit and shorted through a resistance of `10Omega`
Correct Answer - `1Omega`
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Sex refers to the social aspects of differences between male and female.
Gender refers to the social aspects of differences between male and female.
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A) In India, 103 female babies are bom against 100 male babies.
D) The age group of 0 – 5, the number of boys who survive’is much lo wer than girls
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Due to the preference for male children parents may decide to abort female child ……………….
Correct option is A) before birth
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निम्न में से प्रत्येक को दशमलव रूप में लिखिए : `{:((a)20+4/10+1/1000,(b)137+5/100),((c)7/10+6/100+4/1000,(d)23+2/10+6/1000),((e)700+20+5+4/100,):}`
Correct Answer - `{:((a)29.41,(b)137.05,(c)0.764,(d)23.206,(e)725.09):}`
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In newborn babies the heart beat rate is ………. /min.
(A) 100 – 150
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Males carry babies as mothers in A) Dolphin B) Whale
Correct option is A) Dolphin
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a. Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
a. Male gamete (sperm) travels in the female reproductive tract after being released. The path which it takes to fertilise the female gamete (egg) is vagina uterus fallopian tube resulting in...
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