Math, asked by vritikamishra4769, 1 year ago

answer do both the parts................ I want two answers and then from one answer i will make brainlist

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Answers

Answered by subi1298
0
1 st question answer is -18

subi1298: why?
subi1298: sorry you are right? but then answer my question 20grams of ca2+ how many moles of electron proton and neutron?
Answered by preeti09
1

1)If + means - and - means + then

Required question is,

-9+8+7-6+5+4-3-2-1

⇒-21+24

⇒3

2)1-2+3-4+5-6+7-8+9-10

⇒25-30

⇒-5

Hope this helps u..

#markasbrainlist


preeti09: wlcme
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