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Income Taxes (Details Narrative) - USD ($) | 12 Months Ended
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Apr. 30, 2020 | Apr. 30, 2019
Effective income tax rate, percentage | 21.00% | 21.00%
Net operating loss carryforwards | $ 1,424,000 |
Imcome tax, penalties and interest |  |
ISRAEL |  |
Effective income tax rate, percentage | 23.00% |
Net operating loss carryforwards | $ 1,671,000 |

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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